• MS CRM 2011 RetrieveMultiple with JScript JQuery Silverlight LINQ FetchXML and QueryExpression

    原创地址：http://www.cnblogs.com/jfzhu/archive/2013/03/07/2947306.html

    转载请注明出处

    image

    （一） JScript

    JScript一次最多返回50条数据，想要获得更多数据，需要使用__next 对象

    1. 同步操作返回少于50条数据

    <html xmlns="http://www.w3.org/1999/xhtml" > 
<head> 
    <script src="ClientGlobalContext.js.aspx" type="text/javascript"></script> 
    <script src="aw_json.js" type="text/javascript"></script>   
    <script src="new_TestLibrary.js" type="text/javascript"></script> 
    <script type="text/javascript"> 
        function clearaccountsGrid() {  
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = accountsGrid.rows.length - 1; i >= 0; i--) { 
                accountsGrid.deleteRow(i); 
            } 
        }

        function setElementText(element, text) { 
            ///<summary> 
            /// This function mitigates the fact that IE uses innerText and other browsers use textContent. 
            ///</summary> 
            if (typeof (element.innerText) != "undefined") 
            { element.innerText = text; } 
            else 
            { element.textContent = text; } 
        }

        function Button1_onclick() { 
            clearaccountsGrid(); 
            RetrieveAllAccounts() 
        }

        function RetrieveAllAccounts() {            
            try { 
                var oDataPath = TestLibrary._ODataPath();                
                var filter = "/AccountSet?$select=Name"; 
                var retrieveRecordsReq = new XMLHttpRequest(); 
                retrieveRecordsReq.open("GET", oDataPath + filter, false); 
                retrieveRecordsReq.setRequestHeader("Accept", "application/json"); 
                retrieveRecordsReq.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
                retrieveRecordsReq.send(); 
                var retrievedResponse = JSON.parse(retrieveRecordsReq.responseText).d; 
                var totalAccountCount = retrievedResponse.results.length; 
                setElementText(document.getElementById("totalLabel"), "There are " + totalAccountCount + " accounts");

                if (retrievedResponse.results.length > 0) {                                        
                    var accountsGrid = document.getElementById("accountsGrid"); 
                    for (var i = 0; i < retrievedResponse.results.length; i++) { 
                        var account = retrievedResponse.results[i]; 
                        var row = document.createElement("tr"); 
                        var nameCell = document.createElement("td"); 
                        setElementText(nameCell, account.Name); 
                        row.appendChild(nameCell); 
                        accountsGrid.appendChild(row); 
                    }                    
                } 
            } 
            catch (e) { 
                alert(e.Message); 
            } 
        }

    </script>    
    <title></title> 
</head> 
<body> 
    <label id="totalLabel"></label> 
    <input id="Button1" type="button" value="button" onclick="return Button1_onclick()" /> 
    <div id="tableContainer"> 
        <table id="accountsTable" rules="groups" summary="This table displays the accounts retrieved."> 
           <tbody id="accountsGrid" /> 
         </table> 
    </div> 
</body> 
</html>
    if (typeof (TestLibrary) == "undefined") { 
    TestLibrary = { __namespace: true }; 
}


TestLibrary = { 
    Name: "TestLibrary", 
    _context: function () { 
        if (typeof GetGlobalContext != "undefined") 
        { return GetGlobalContext(); } 
        else { 
            if (typeof Xrm != "undefined") { 
                return Xrm.Page.context; 
            } 
            else 
            { throw new Error("Context is not available."); } 
        } 
    }, 
    _getServerUrl: function () { 
        var serverUrl = TestLibrary._context().getServerUrl() 
        if (serverUrl.match(/\/$/)) { 
            serverUrl = serverUrl.substring(0, serverUrl.length - 1); 
        } 
        return serverUrl; 
    }, 
    _ODataPath: function () { 
        return TestLibrary._getServerUrl() + "/XRMServices/2011/OrganizationData.svc/"; 
    } 
}

    2. 同步操作返回大于50条数据

    <html xmlns="http://www.w3.org/1999/xhtml" > 
<head> 
    <script src="ClientGlobalContext.js.aspx" type="text/javascript"></script> 
    <script src="aw_json.js" type="text/javascript"></script>   
    <script src="new_TestLibrary.js" type="text/javascript"></script> 
    <script type="text/javascript"> 
        function clearaccountsGrid() { 
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = accountsGrid.rows.length - 1; i >= 0; i--) { 
                accountsGrid.deleteRow(i); 
            } 
        }

        function setElementText(element, text) { 
            ///<summary> 
            /// This function mitigates the fact that IE uses innerText and other browsers use textContent. 
            ///</summary> 
            if (typeof (element.innerText) != "undefined") 
            { element.innerText = text; } 
            else 
            { element.textContent = text; } 
        }

        function Button1_onclick() {            
            clearaccountsGrid(); 
            RetrieveAllAccounts() 
        }

        function RetrieveAllAccounts() {            
            try {                
                var oDataPath = TestLibrary._ODataPath(); 
                var type = "AccountSet"; 
                var filter = "?$select=Name"; 
                var retrieveRecordsReq = new XMLHttpRequest(); 
                retrieveRecordsReq.open("GET", oDataPath + type + filter, false); 
                var totalAccountCount = 0; 
                retrieveRecordsReq.setRequestHeader("Accept", "application/json"); 
                retrieveRecordsReq.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
                retrieveRecordsReq.send(); 
                var retrievedResponse = JSON.parse(retrieveRecordsReq.responseText).d;

                totalAccountCount = totalAccountCount + retrievedResponse.results.length; 
                setElementText(document.getElementById("totalLabel"), "There are " + totalAccountCount + " accounts");

                if (retrievedResponse.results.length > 0) { 
                    var accountsGrid = document.getElementById("accountsGrid"); 
                    for (var i = 0; i < retrievedResponse.results.length; i++) { 
                        var account = retrievedResponse.results[i]; 
                        var row = document.createElement("tr"); 
                        var nameCell = document.createElement("td"); 
                        setElementText(nameCell, account.Name); 
                        row.appendChild(nameCell); 
                        accountsGrid.appendChild(row); 
                    }                    
                } 
                
                while (retrievedResponse.__next != null) { 
                    var queryOptions = retrievedResponse.__next.substring((TestLibrary._ODataPath() + "AccountSet").length); 
                    retrieveRecordsReq = new XMLHttpRequest(); 
                    retrieveRecordsReq.open("GET",  oDataPath + type + queryOptions, false);                    
                    retrieveRecordsReq.setRequestHeader("Accept", "application/json"); 
                    retrieveRecordsReq.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
                    retrieveRecordsReq.send(); 
                    retrievedResponse = JSON.parse(retrieveRecordsReq.responseText).d;

                    totalAccountCount = totalAccountCount + retrievedResponse.results.length; 
                    setElementText(document.getElementById("totalLabel"), "There are " + totalAccountCount + " accounts");

                    if (retrievedResponse.results.length > 0) { 
                        var accountsGrid = document.getElementById("accountsGrid"); 
                        for (var i = 0; i < retrievedResponse.results.length; i++) { 
                            var account = retrievedResponse.results[i]; 
                            var row = document.createElement("tr"); 
                            var nameCell = document.createElement("td"); 
                            setElementText(nameCell, account.Name); 
                            row.appendChild(nameCell); 
                            accountsGrid.appendChild(row); 
                        }                    
                    } 
                }     
            } 
            catch (e) { 
                alert(e.Message); 
            } 
        }

    </script>    
    <title></title> 
</head> 
<body> 
    <label id="totalLabel"></label> 
    <input id="Button1" type="button" value="button" onclick="return Button1_onclick()" /> 
    <div id="tableContainer"> 
        <table id="accountsTable" rules="groups" summary="This table displays the accounts retrieved."> 
           <tbody id="accountsGrid" /> 
         </table> 
    </div> 
</body> 
</html>

    3. 异步操作返回少于50条数据

    <html xmlns="http://www.w3.org/1999/xhtml" > 
<head> 
    <script src="ClientGlobalContext.js.aspx" type="text/javascript"></script> 
    <script src="aw_json.js" type="text/javascript"></script> 
    <script src="new_TestLibrary.js" type="text/javascript"></script> 
    <script type="text/javascript"> 
        var totalAccountCount = 0;

        function retrieveAccounts() { 
            clearaccountsGrid();           
            
            var req = new XMLHttpRequest(); 
            req.open("GET", TestLibrary._ODataPath() + "AccountSet?$select=Name", true); 
            req.setRequestHeader("Accept", "application/json"); 
            req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
            req.onreadystatechange = function () { 
                if (this.readyState == 4 /* complete */) { 
                    if (this.status == 200) { 
                        var returned = JSON.parse(this.responseText).d; 
                        retrieveAccountsCallBack(returned.results);                        
                    } 
                    else { 
                        alert(_errorHandler(this).message); 
                    } 
                } 
            }; 
            req.send();

        }

        function _errorHandler(req) { 
            if (req.status == 12029) 
            { return new Error("The attempt to connect to the server failed."); } 
            if (req.status == 12007) 
            { return new Error("The server name could not be resolved."); } 
            var errorText; 
            try 
            { errorText = JSON.parse(req.responseText).error.message.value; } 
            catch (e) 
            { errorText = req.responseText }

            return new Error("Error : " + 
            req.status + ": " + 
            req.statusText + ": " + errorText); 
        }

        function retrieveAccountsCallBack(retrievedAccounts) { 
            totalAccountCount = totalAccountCount + retrievedAccounts.length; 
            setElementText(document.getElementById("totalLabel"), "There are " + totalAccountCount + " accounts"); 
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = 0; i < retrievedAccounts.length; i++) { 
                var account = retrievedAccounts[i]; 
                var row = document.createElement("tr"); 
                var nameCell = document.createElement("td"); 
                setElementText(nameCell, account.Name); 
                row.appendChild(nameCell); 
                accountsGrid.appendChild(row); 
            } 
        }

        function clearaccountsGrid() { 
            totalAccountCount = 0; 
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = accountsGrid.rows.length - 1; i >= 0; i--) { 
                accountsGrid.deleteRow(i); 
            } 
        }

        function setElementText(element, text) { 
            ///<summary> 
            /// This function mitigates the fact that IE uses innerText and other browsers use textContent. 
            ///</summary> 
            if (typeof (element.innerText) != "undefined") 
            { element.innerText = text; } 
            else 
            { element.textContent = text; } 
        } 
        function Button1_onclick() { 
            retrieveAccounts() 
        }

    </script>    
    <title></title> 
</head> 
<body> 
    <label id="totalLabel"></label> 
    <input id="Button1" type="button" value="button" onclick="return Button1_onclick()" /> 
    <div id="tableContainer"> 
        <table id="accountsTable" rules="groups" summary="This table displays the accounts retrieved."> 
           <tbody id="accountsGrid" /> 
        </table> 
    </div> 
</body> 
</html>

    4. 异步操作返回大于50条数据

    <html xmlns="http://www.w3.org/1999/xhtml" > 
<head> 
    <script src="ClientGlobalContext.js.aspx" type="text/javascript"></script> 
    <script src="aw_json.js" type="text/javascript"></script> 
    <script src="new_TestLibrary.js" type="text/javascript"></script> 
    <script type="text/javascript"> 
        var totalAccountCount = 0;        

        function retrieveAccounts() { 
            clearaccountsGrid();           
            var options = "$select=Name"; 
            //The retrieveAccountsCallBack function is passed through as the successCallBack. 
            TestLibrary.RetrieveMultipleRecords("Account", options, retrieveAccountsCallBack, function (error) { alert(error.message); }, function () { alert("complete")}); 
        }

        function retrieveAccountsCallBack(retrievedAccounts) { 
            totalAccountCount = totalAccountCount + retrievedAccounts.length; 
            setElementText(document.getElementById("totalLabel"), "There are " + totalAccountCount + " accounts"); 
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = 0; i < retrievedAccounts.length; i++) { 
                var account = retrievedAccounts[i]; 
                var row = document.createElement("tr"); 
                var nameCell = document.createElement("td"); 
                setElementText(nameCell, account.Name); 
                row.appendChild(nameCell);               
                accountsGrid.appendChild(row); 
            } 
        }

        function clearaccountsGrid() { 
            totalAccountCount = 0; 
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = accountsGrid.rows.length - 1; i >= 0; i--) { 
                accountsGrid.deleteRow(i); 
            } 
        }

        function setElementText(element, text) { 
            ///<summary> 
            /// This function mitigates the fact that IE uses innerText and other browsers use textContent. 
            ///</summary> 
            if (typeof (element.innerText) != "undefined") 
            { element.innerText = text; } 
            else 
            { element.textContent = text; } 
        } 
        function Button1_onclick() { 
            retrieveAccounts() 
        }

    </script>    
    <title></title> 
</head> 
<body> 
    <label id="totalLabel"></label> 
    <input id="Button1" type="button" value="button" onclick="return Button1_onclick()" /> 
    <div id="tableContainer"> 
        <table id="accountsTable" rules="groups" summary="This table displays the accounts retrieved."> 
           <tbody id="accountsGrid" /> 
        </table> 
    </div> 
</body> 
</html>

    TestLibrary.js是SDK.REST.js 的精简版，你完全可以也使用SDK.REST.js

    if (typeof (TestLibrary) == "undefined") { 
    TestLibrary = { __namespace: true }; 
}


TestLibrary = { 
    Name: "TestLibrary", 
    _context: function () { 
        if (typeof GetGlobalContext != "undefined") 
        { return GetGlobalContext(); } 
        else { 
            if (typeof Xrm != "undefined") { 
                return Xrm.Page.context; 
            } 
            else 
            { throw new Error("Context is not available."); } 
        } 
    }, 
    _getServerUrl: function () { 
        var serverUrl = TestLibrary._context().getServerUrl() 
        if (serverUrl.match(/\/$/)) { 
            serverUrl = serverUrl.substring(0, serverUrl.length - 1); 
        } 
        return serverUrl; 
    }, 
    _ODataPath: function () { 
        return TestLibrary._getServerUrl() + "/XRMServices/2011/OrganizationData.svc/"; 
    }, 
    RetrieveMultipleRecords: function (type, options, successCallback, errorCallback, OnComplete) {        
        var optionsString; 
        if (options != null) { 
            if (options.charAt(0) != "?") { 
                optionsString = "?" + options; 
            } 
            else 
            { optionsString = options; } 
        }

        var req = new XMLHttpRequest(); 
        req.open("GET", TestLibrary._ODataPath() + type + "Set" + optionsString, true);        
        req.setRequestHeader("Accept", "application/json"); 
        req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
        req.onreadystatechange = function () { 
            if (this.readyState == 4 /* complete */) { 
                if (this.status == 200) { 
                    var returned = JSON.parse(this.responseText).d; 
                    successCallback(returned.results); 
                    if (returned.__next != null) { 
                        var queryOptions = returned.__next.substring((TestLibrary._ODataPath() + type + "Set").length);                        
                        TestLibrary.RetrieveMultipleRecords(type, queryOptions, successCallback, errorCallback, OnComplete); 
                    } 
                    else 
                    { OnComplete(); } 
                } 
                else { 
                    errorCallback(TestLibrary._errorHandler(this)); 
                } 
            } 
        }; 
        req.send(); 
    }, 
    _errorHandler: function (req) {        
        if (req.status == 12029) 
        { return new Error("The attempt to connect to the server failed."); } 
        if (req.status == 12007) 
        { return new Error("The server name could not be resolved."); } 
        var errorText; 
        try 
            { errorText = JSON.parse(req.responseText).error.message.value; } 
        catch (e) 
            { errorText = req.responseText }

        return new Error("Error : " + 
            req.status + ": " + 
            req.statusText + ": " + errorText); 
    } 
}

    SDK.REST.js：

    if (typeof (SDK) == "undefined") 
{ SDK = { __namespace: true }; } 
SDK.REST = { 
_context: function () { 
  ///<summary> 
  /// Private function to the context object. 
  ///</summary> 
  ///<returns>Context</returns> 
  if (typeof GetGlobalContext != "undefined") 
  { return GetGlobalContext(); } 
  else { 
   if (typeof Xrm != "undefined") { 
    return Xrm.Page.context; 
   } 
   else 
   { throw new Error("Context is not available."); } 
  } 
}, 
_getServerUrl: function () { 
  ///<summary> 
  /// Private function to return the server URL from the context 
  ///</summary> 
  ///<returns>String</returns> 
  var serverUrl = this._context().getServerUrl() 
  if (serverUrl.match(/\/$/)) { 
   serverUrl = serverUrl.substring(0, serverUrl.length - 1); 
  } 
  return serverUrl; 
}, 
_ODataPath: function () { 
  ///<summary> 
  /// Private function to return the path to the REST endpoint. 
  ///</summary> 
  ///<returns>String</returns> 
  return this._getServerUrl() + "/XRMServices/2011/OrganizationData.svc/"; 
}, 
_errorHandler: function (req) { 
  ///<summary> 
  /// Private function return an Error object to the errorCallback 
  ///</summary> 
  ///<param name="req" type="XMLHttpRequest"> 
  /// The XMLHttpRequest response that returned an error. 
  ///</param> 
  ///<returns>Error</returns> 
  //Error descriptions come from http://support.microsoft.com/kb/193625
  if (req.status == 12029) 
  { return new Error("The attempt to connect to the server failed."); } 
  if (req.status == 12007) 
  { return new Error("The server name could not be resolved."); } 
  var errorText; 
  try 
        { errorText = JSON.parse(req.responseText).error.message.value; } 
  catch (e) 
        { errorText = req.responseText }

  return new Error("Error : " + 
        req.status + ": " + 
        req.statusText + ": " + errorText); 
}, 
_dateReviver: function (key, value) { 
  ///<summary> 
  /// Private function to convert matching string values to Date objects. 
  ///</summary> 
  ///<param name="key" type="String"> 
  /// The key used to identify the object property 
  ///</param> 
  ///<param name="value" type="String"> 
  /// The string value representing a date 
  ///</param> 
  var a; 
  if (typeof value === 'string') { 
   a = /Date\(([-+]?\d+)\)/.exec(value); 
   if (a) { 
    return new Date(parseInt(value.replace("/Date(", "").replace(")/", ""), 10)); 
   } 
  } 
  return value; 
}, 
_parameterCheck: function (parameter, message) { 
  ///<summary> 
  /// Private function used to check whether required parameters are null or undefined 
  ///</summary> 
  ///<param name="parameter" type="Object"> 
  /// The parameter to check; 
  ///</param> 
  ///<param name="message" type="String"> 
  /// The error message text to include when the error is thrown. 
  ///</param> 
  if ((typeof parameter === "undefined") || parameter === null) { 
   throw new Error(message); 
  } 
}, 
_stringParameterCheck: function (parameter, message) { 
  ///<summary> 
  /// Private function used to check whether required parameters are null or undefined 
  ///</summary> 
  ///<param name="parameter" type="String"> 
  /// The string parameter to check; 
  ///</param> 
  ///<param name="message" type="String"> 
  /// The error message text to include when the error is thrown. 
  ///</param> 
  if (typeof parameter != "string") { 
   throw new Error(message); 
  } 
}, 
_callbackParameterCheck: function (callbackParameter, message) { 
  ///<summary> 
  /// Private function used to check whether required callback parameters are functions 
  ///</summary> 
  ///<param name="callbackParameter" type="Function"> 
  /// The callback parameter to check; 
  ///</param> 
  ///<param name="message" type="String"> 
  /// The error message text to include when the error is thrown. 
  ///</param> 
  if (typeof callbackParameter != "function") { 
   throw new Error(message); 
  } 
}, 
createRecord: function (object, type, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to create a new record. 
  ///</summary> 
  ///<param name="object" type="Object"> 
  /// A JavaScript object with properties corresponding to the Schema name of 
  /// entity attributes that are valid for create operations. 
  ///</param> 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to create. 
  /// For an Account record, use "Account" 
  ///</param> 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// This function can accept the returned record as a parameter. 
  /// </param> 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._parameterCheck(object, "SDK.REST.createRecord requires the object parameter."); 
  this._stringParameterCheck(type, "SDK.REST.createRecord requires the type parameter is a string."); 
  this._callbackParameterCheck(successCallback, "SDK.REST.createRecord requires the successCallback is a function."); 
  this._callbackParameterCheck(errorCallback, "SDK.REST.createRecord requires the errorCallback is a function."); 
  var req = new XMLHttpRequest(); 
  req.open("POST", encodeURI(this._ODataPath() + type + "Set"), true); 
  req.setRequestHeader("Accept", "application/json"); 
  req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
  req.onreadystatechange = function () { 
   if (this.readyState == 4 /* complete */) { 
    if (this.status == 201) { 
     successCallback(JSON.parse(this.responseText, SDK.REST._dateReviver).d); 
    } 
    else { 
     errorCallback(SDK.REST._errorHandler(this)); 
    } 
   } 
  }; 
  req.send(JSON.stringify(object)); 
}, 
retrieveRecord: function (id, type, select, expand, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to retrieve a record. 
  ///</summary> 
  ///<param name="id" type="String"> 
  /// A String representing the GUID value for the record to retrieve. 
  ///</param> 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to retrieve. 
  /// For an Account record, use "Account" 
  ///</param> 
  ///<param name="select" type="String"> 
  /// A String representing the $select OData System Query Option to control which 
  /// attributes will be returned. This is a comma separated list of Attribute names that are valid for retrieve. 
  /// If null all properties for the record will be returned 
  ///</param> 
  ///<param name="expand" type="String"> 
  /// A String representing the $expand OData System Query Option value to control which 
  /// related records are also returned. This is a comma separated list of of up to 6 entity relationship names 
  /// If null no expanded related records will be returned. 
  ///</param> 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// This function must accept the returned record as a parameter. 
  /// </param> 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._stringParameterCheck(id, "SDK.REST.retrieveRecord requires the id parameter is a string."); 
  this._stringParameterCheck(type, "SDK.REST.retrieveRecord requires the type parameter is a string."); 
  if (select != null) 
   this._stringParameterCheck(select, "SDK.REST.retrieveRecord requires the select parameter is a string."); 
  if (expand != null) 
   this._stringParameterCheck(expand, "SDK.REST.retrieveRecord requires the expand parameter is a string."); 
  this._callbackParameterCheck(successCallback, "SDK.REST.retrieveRecord requires the successCallback parameter is a function."); 
  this._callbackParameterCheck(errorCallback, "SDK.REST.retrieveRecord requires the errorCallback parameter is a function.");

  var systemQueryOptions = "";

  if (select != null || expand != null) { 
   systemQueryOptions = "?"; 
   if (select != null) { 
    var selectString = "$select=" + select; 
    if (expand != null) { 
     selectString = selectString + "," + expand; 
    } 
    systemQueryOptions = systemQueryOptions + selectString; 
   } 
   if (expand != null) { 
    systemQueryOptions = systemQueryOptions + "&$expand=" + expand; 
   } 
  }


  var req = new XMLHttpRequest(); 
  req.open("GET", encodeURI(this._ODataPath() + type + "Set(guid'" + id + "')" + systemQueryOptions), true); 
  req.setRequestHeader("Accept", "application/json"); 
  req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
  req.onreadystatechange = function () { 
   if (this.readyState == 4 /* complete */) { 
    if (this.status == 200) { 
     successCallback(JSON.parse(this.responseText, SDK.REST._dateReviver).d); 
    } 
    else { 
     errorCallback(SDK.REST._errorHandler(this)); 
    } 
   } 
  }; 
  req.send(); 
}, 
updateRecord: function (id, object, type, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to update a record. 
  ///</summary> 
  ///<param name="id" type="String"> 
  /// A String representing the GUID value for the record to retrieve. 
  ///</param> 
  ///<param name="object" type="Object"> 
  /// A JavaScript object with properties corresponding to the Schema Names for 
  /// entity attributes that are valid for update operations. 
  ///</param> 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to retrieve. 
  /// For an Account record, use "Account" 
  ///</param> 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function. 
  /// </param> 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._stringParameterCheck(id, "SDK.REST.updateRecord requires the id parameter."); 
  this._parameterCheck(object, "SDK.REST.updateRecord requires the object parameter."); 
  this._stringParameterCheck(type, "SDK.REST.updateRecord requires the type parameter."); 
  this._callbackParameterCheck(successCallback, "SDK.REST.updateRecord requires the successCallback is a function."); 
  this._callbackParameterCheck(errorCallback, "SDK.REST.updateRecord requires the errorCallback is a function."); 
  var req = new XMLHttpRequest();

  req.open("POST", encodeURI(this._ODataPath() + type + "Set(guid'" + id + "')"), true); 
  req.setRequestHeader("Accept", "application/json"); 
  req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
  req.setRequestHeader("X-HTTP-Method", "MERGE"); 
  req.onreadystatechange = function () { 
   if (this.readyState == 4 /* complete */) { 
    if (this.status == 204 || this.status == 1223) { 
     successCallback(); 
    } 
    else { 
     errorCallback(SDK.REST._errorHandler(this)); 
    } 
   } 
  }; 
  req.send(JSON.stringify(object)); 
}, 
deleteRecord: function (id, type, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to delete a record. 
  ///</summary> 
  ///<param name="id" type="String"> 
  /// A String representing the GUID value for the record to delete. 
  ///</param> 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to delete. 
  /// For an Account record, use "Account" 
  ///</param> 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function. 
  /// </param> 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._stringParameterCheck(id, "SDK.REST.deleteRecord requires the id parameter."); 
  this._stringParameterCheck(type, "SDK.REST.deleteRecord requires the type parameter."); 
  this._callbackParameterCheck(successCallback, "SDK.REST.deleteRecord requires the successCallback is a function."); 
  this._callbackParameterCheck(errorCallback, "SDK.REST.deleteRecord requires the errorCallback is a function."); 
  var req = new XMLHttpRequest(); 
  req.open("POST", encodeURI(this._ODataPath() + type + "Set(guid'" + id + "')"), true); 
  req.setRequestHeader("Accept", "application/json"); 
  req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
  req.setRequestHeader("X-HTTP-Method", "DELETE"); 
  req.onreadystatechange = function () {

   if (this.readyState == 4 /* complete */) { 
    if (this.status == 204 || this.status == 1223) { 
     successCallback(); 
    } 
    else { 
     errorCallback(SDK.REST._errorHandler(this)); 
    } 
   } 
  }; 
  req.send();

}, 
retrieveMultipleRecords: function (type, options, successCallback, errorCallback, OnComplete) { 
  ///<summary> 
  /// Sends an asynchronous request to retrieve records. 
  ///</summary> 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to retrieve. 
  /// For an Account record, use "Account" 
  ///</param> 
  ///<param name="options" type="String"> 
  /// A String representing the OData System Query Options to control the data returned 
  ///</param> 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called for each page of records returned. 
  /// Each page is 50 records. If you expect that more than one page of records will be returned, 
  /// this function should loop through the results and push the records into an array outside of the function. 
  /// Use the OnComplete event handler to know when all the records have been processed. 
  /// </param> 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  ///<param name="OnComplete" type="Function"> 
  /// The function that will be called when all the requested records have been returned. 
  /// No parameters are passed to this function. 
  /// </param> 
  this._stringParameterCheck(type, "SDK.REST.retrieveMultipleRecords requires the type parameter is a string."); 
  if (options != null) 
   this._stringParameterCheck(options, "SDK.REST.retrieveMultipleRecords requires the options parameter is a string."); 
  this._callbackParameterCheck(successCallback, "SDK.REST.retrieveMultipleRecords requires the successCallback parameter is a function."); 
  this._callbackParameterCheck(errorCallback, "SDK.REST.retrieveMultipleRecords requires the errorCallback parameter is a function."); 
  this._callbackParameterCheck(OnComplete, "SDK.REST.retrieveMultipleRecords requires the OnComplete parameter is a function.");

  var optionsString; 
  if (options != null) { 
   if (options.charAt(0) != "?") { 
    optionsString = "?" + options; 
   } 
   else 
   { optionsString = options; } 
  } 
  var req = new XMLHttpRequest(); 
  req.open("GET", this._ODataPath() + type + "Set" + optionsString, true); 
  req.setRequestHeader("Accept", "application/json"); 
  req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
  req.onreadystatechange = function () { 
   if (this.readyState == 4 /* complete */) { 
    if (this.status == 200) { 
     var returned = JSON.parse(this.responseText, SDK.REST._dateReviver).d; 
     successCallback(returned.results); 
     if (returned.__next != null) { 
      var queryOptions = returned.__next.substring((SDK.REST._ODataPath() + type + "Set").length); 
      SDK.REST.retrieveMultipleRecords(type, queryOptions, successCallback, errorCallback, OnComplete); 
     } 
     else 
     { OnComplete(); } 
    } 
    else { 
     errorCallback(SDK.REST._errorHandler(this)); 
    } 
   } 
  }; 
  req.send(); 
}, 
associateRecords: function (parentId, parentType, relationshipName, childId, childType, successCallback, errorCallback) { 
  this._stringParameterCheck(parentId, "SDK.REST.associateRecords requires the parentId parameter is a string."); 
  ///<param name="parentId" type="String"> 
  /// The Id of the record to be the parent record in the relationship 
  /// </param> 
  ///<param name="parentType" type="String"> 
  /// The Schema Name of the Entity type for the parent record. 
  /// For an Account record, use "Account" 
  /// </param> 
  ///<param name="relationshipName" type="String"> 
  /// The Schema Name of the Entity Relationship to use to associate the records. 
  /// To associate account records as a Parent account, use "Referencedaccount_parent_account" 
  /// </param> 
  ///<param name="childId" type="String"> 
  /// The Id of the record to be the child record in the relationship 
  /// </param> 
  ///<param name="childType" type="String"> 
  /// The Schema Name of the Entity type for the child record. 
  /// For an Account record, use "Account" 
  /// </param> 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function. 
  /// </param> 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._stringParameterCheck(parentType, "SDK.REST.associateRecords requires the parentType parameter is a string."); 
  this._stringParameterCheck(relationshipName, "SDK.REST.associateRecords requires the relationshipName parameter is a string."); 
  this._stringParameterCheck(childId, "SDK.REST.associateRecords requires the childId parameter is a string."); 
  this._stringParameterCheck(childType, "SDK.REST.associateRecords requires the childType parameter is a string."); 
  this._callbackParameterCheck(successCallback, "SDK.REST.associateRecords requires the successCallback parameter is a function."); 
  this._callbackParameterCheck(errorCallback, "SDK.REST.associateRecords requires the errorCallback parameter is a function.");

  var req = new XMLHttpRequest(); 
  req.open("POST", encodeURI(this._ODataPath() + parentType + "Set(guid'" + parentId + "')/$links/" + relationshipName), true); 
  req.setRequestHeader("Accept", "application/json"); 
  req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
  req.onreadystatechange = function () { 
   if (this.readyState == 4 /* complete */) { 
    if (this.status == 204 || this.status == 1223) { 
     successCallback(); 
    } 
    else { 
     errorCallback(SDK.REST._errorHandler(this)); 
    } 
   } 
  }; 
  var childEntityReference = {} 
  childEntityReference.uri = this._ODataPath() + "/" + childType + "Set(guid'" + childId + "')"; 
  req.send(JSON.stringify(childEntityReference)); 
}, 
disassociateRecords: function (parentId, parentType, relationshipName, childId, successCallback, errorCallback) { 
  this._stringParameterCheck(parentId, "SDK.REST.disassociateRecords requires the parentId parameter is a string."); 
  ///<param name="parentId" type="String"> 
  /// The Id of the record to be the parent record in the relationship 
  /// </param> 
  ///<param name="parentType" type="String"> 
  /// The Schema Name of the Entity type for the parent record. 
  /// For an Account record, use "Account" 
  /// </param> 
  ///<param name="relationshipName" type="String"> 
  /// The Schema Name of the Entity Relationship to use to disassociate the records. 
  /// To disassociate account records as a Parent account, use "Referencedaccount_parent_account" 
  /// </param> 
  ///<param name="childId" type="String"> 
  /// The Id of the record to be disassociated as the child record in the relationship 
  /// </param> 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function. 
  /// </param> 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._stringParameterCheck(parentType, "SDK.REST.disassociateRecords requires the parentType parameter is a string."); 
  this._stringParameterCheck(relationshipName, "SDK.REST.disassociateRecords requires the relationshipName parameter is a string."); 
  this._stringParameterCheck(childId, "SDK.REST.disassociateRecords requires the childId parameter is a string."); 
  this._callbackParameterCheck(successCallback, "SDK.REST.disassociateRecords requires the successCallback parameter is a function."); 
  this._callbackParameterCheck(errorCallback, "SDK.REST.disassociateRecords requires the errorCallback parameter is a function.");

  var req = new XMLHttpRequest(); 
  req.open("POST", encodeURI(this._ODataPath() + parentType + "Set(guid'" + parentId + "')/$links/" + relationshipName + "(guid'" + childId + "')"), true); 
  req.setRequestHeader("Accept", "application/json"); 
  req.setRequestHeader("Content-Type", "application/json; charset=utf-8"); 
  req.setRequestHeader("X-HTTP-Method", "DELETE"); 
  req.onreadystatechange = function () { 
   if (this.readyState == 4 /* complete */) { 
    if (this.status == 204 || this.status == 1223) { 
     successCallback(); 
    } 
    else { 
     errorCallback(SDK.REST._errorHandler(this)); 
    } 
   } 
  }; 
  req.send(); 
}, 
__namespace: true 
};

    （二） JQuery

    JQuery使用AJAX，所以全部都是异步操作。在下面的例子中直接使用SDK.JQuery.js

    <html xmlns="http://www.w3.org/1999/xhtml" > 
<head> 
    <script src="ClientGlobalContext.js.aspx" type="text/javascript"></script> 
    <script src="aw_json.js" type="text/javascript"></script> 
    <script src="new_jquery.js" type="text/javascript"></script> 
    <script src="new_sdk.jquery.js" type="text/javascript"></script> 
    <script type="text/javascript"> 
        var totalAccountCount = 0;

        function retrieveAccounts() { 
            clearaccountsGrid();

            SDK.JQuery.retrieveMultipleRecords( 
             "Account", 
             "$select=Name", 
             retrieveAccountsCallBack, 
             function (error) { 
                 alert(error.message); 
             }, 
             function () { 
                 alert("complete"); 
             } 
           ); 
        }

        function retrieveAccountsCallBack(retrievedAccounts) { 
            totalAccountCount = totalAccountCount + retrievedAccounts.length; 
            setElementText(document.getElementById("totalLabel"), "There are " + totalAccountCount + " accounts"); 
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = 0; i < retrievedAccounts.length; i++) { 
                var account = retrievedAccounts[i]; 
                var row = document.createElement("tr"); 
                var nameCell = document.createElement("td"); 
                setElementText(nameCell, account.Name); 
                row.appendChild(nameCell); 
                accountsGrid.appendChild(row); 
            } 
        }

        function clearaccountsGrid() { 
            totalAccountCount = 0; 
            var accountsGrid = document.getElementById("accountsGrid"); 
            for (var i = accountsGrid.rows.length - 1; i >= 0; i--) { 
                accountsGrid.deleteRow(i); 
            } 
        }

        function setElementText(element, text) { 
            ///<summary> 
            /// This function mitigates the fact that IE uses innerText and other browsers use textContent. 
            ///</summary> 
            if (typeof (element.innerText) != "undefined") 
            { element.innerText = text; } 
            else 
            { element.textContent = text; } 
        } 
        function Button1_onclick() { 
            retrieveAccounts() 
        }

    </script>    
    <title></title> 
</head> 
<body> 
    <label id="totalLabel"></label> 
    <input id="Button1" type="button" value="button" onclick="return Button1_onclick()" /> 
    <div id="tableContainer"> 
        <table id="accountsTable" rules="groups" summary="This table displays the accounts retrieved."> 
            <tbody id="accountsGrid" /> 
        </table> 
    </div> 
</body> 
</html>

     SDK.JQuery.js

    /// <reference path="jquery1.4.1vsdoc.js" />

if (typeof (SDK) == "undefined") 
{ SDK = { __namespace: true }; } 
SDK.JQuery = { 
_context: function () { 
  ///<summary> 
  /// Private function to the context object. 
  ///</summary> 
  ///<returns>Context</returns> 
  if (typeof GetGlobalContext != "undefined") 
  { return GetGlobalContext(); } 
  else { 
   if (typeof Xrm != "undefined") { 
    return Xrm.Page.context; 
   } 
   else 
   { throw new Error("Context is not available."); } 
  } 
}, 
_getServerUrl: function () { 
  ///<summary> 
  /// Private function to return the server URL from the context 
  ///</summary> 
  ///<returns>String</returns> 
  var serverUrl = this._context().getServerUrl() 
  if (serverUrl.match(/\/$/)) { 
   serverUrl = serverUrl.substring(0, serverUrl.length - 1); 
  } 
  return serverUrl; 
}, 
_ODataPath: function () { 
  ///<summary> 
  /// Private function to return the path to the REST endpoint. 
  ///</summary> 
  ///<returns>String</returns> 
  return this._getServerUrl() + "/XRMServices/2011/OrganizationData.svc/"; 
}, 
_errorHandler: function (req) { 
  ///<summary> 
  /// Private function return an Error object to the errorCallback 
  ///</summary> 
  ///<param name="req" type="XMLHttpRequest"> 
  /// The XMLHttpRequest response that returned an error. 
  ///</param> 
  ///<returns>Error</returns> 
  return new Error("Error : " + 
        req.status + ": " + 
        req.statusText + ": " + 
        JSON.parse(req.responseText).error.message.value); 
}, 
_dateReviver: function (key, value) { 
  ///<summary> 
  /// Private function to convert matching string values to Date objects. 
  ///</summary> 
  ///<param name="key" type="String"> 
  /// The key used to identify the object property 
  ///</param> 
  ///<param name="value" type="String"> 
  /// The string value representing a date 
  ///</param> 
  var a; 
  if (typeof value === 'string') { 
   a = /Date\(([-+]?\d+)\)/.exec(value); 
   if (a) { 
    return new Date(parseInt(value.replace("/Date(", "").replace(")/", ""), 10)); 
   } 
  } 
  return value; 
}, 
_parameterCheck: function (parameter, message) { 
  ///<summary> 
  /// Private function used to check whether required parameters are null or undefined 
  ///</summary> 
  ///<param name="parameter" type="Object"> 
  /// The parameter to check; 
  ///</param> 
  ///<param name="message" type="String"> 
  /// The error message text to include when the error is thrown. 
  ///</param> 
  if ((typeof parameter === "undefined") || parameter === null) { 
   throw new Error(message); 
  } 
}, 
_stringParameterCheck: function (parameter, message) { 
  ///<summary> 
  /// Private function used to check whether required parameters are null or undefined 
  ///</summary> 
  ///<param name="parameter" type="String"> 
  /// The string parameter to check; 
  ///</param> 
  ///<param name="message" type="String"> 
  /// The error message text to include when the error is thrown. 
  ///</param> 
  if (typeof parameter != "string") { 
   throw new Error(message); 
  } 
}, 
_callbackParameterCheck: function (callbackParameter, message) { 
  ///<summary> 
  /// Private function used to check whether required callback parameters are functions 
  ///</summary> 
  ///<param name="callbackParameter" type="Function"> 
  /// The callback parameter to check; 
  ///</param> 
  ///<param name="message" type="String"> 
  /// The error message text to include when the error is thrown. 
  ///</param> 
  if (typeof callbackParameter != "function") { 
   throw new Error(message); 
  } 
}, 
createRecord: function (object, type, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to create a new record. 
  ///</summary> 
  ///<param name="object" type="Object"> 
  /// A JavaScript object with properties corresponding to the Schema name of 
  /// entity attributes that are valid for create operations. 
  ///</param> 
  this._parameterCheck(object, "SDK.JQuery.createRecord requires the object parameter."); 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to create. 
  /// For an Account record, use "Account" 
  ///</param> 
  this._stringParameterCheck(type, "SDK.JQuery.createRecord requires the type parameter is a string."); 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// This function can accept the returned record as a parameter. 
  /// </param> 
  this._callbackParameterCheck(successCallback, "SDK.JQuery.createRecord requires the successCallback is a function."); 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.createRecord requires the errorCallback is a function.");

  var jsonEntity = window.JSON.stringify(object);

  $.ajax({ type: "POST", 
   contentType: "application/json; charset=utf-8", 
   datatype: "json", 
   url: this._ODataPath() + type + "Set", 
   data: jsonEntity, 
   beforeSend: function (xhr) { 
    //Specifying this header ensures that the results will be returned as JSON.             
    xhr.setRequestHeader("Accept", "application/json"); 
   }, 
   success: function (data, textStatus, xhr) { 
    successCallback(data.d); 
   }, 
   error: function (xhr, textStatus, errorThrown) { 
    errorCallback(SDK.JQuery._errorHandler(xhr)); 
   } 
  }); 
}, 
retrieveRecord: function (id, type, select, expand, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to retrieve a record. 
  ///</summary> 
  ///<param name="id" type="String"> 
  /// A String representing the GUID value for the record to retrieve. 
  ///</param> 
  this._stringParameterCheck(id, "SDK.JQuery.retrieveRecord requires the id parameter is a string."); 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to retrieve. 
  /// For an Account record, use "Account" 
  ///</param> 
  this._stringParameterCheck(type, "SDK.JQuery.retrieveRecord requires the type parameter is a string."); 
  ///<param name="select" type="String"> 
  /// A String representing the $select OData System Query Option to control which 
  /// attributes will be returned. This is a comma separated list of Attribute names that are valid for retrieve. 
  /// If null all properties for the record will be returned 
  ///</param> 
  if (select != null) 
   this._stringParameterCheck(select, "SDK.JQuery.retrieveRecord requires the select parameter is a string."); 
  ///<param name="expand" type="String"> 
  /// A String representing the $expand OData System Query Option value to control which 
  /// related records are also returned. This is a comma separated list of of up to 6 entity relationship names 
  /// If null no expanded related records will be returned. 
  ///</param> 
  if (expand != null) 
   this._stringParameterCheck(expand, "SDK.JQuery.retrieveRecord requires the expand parameter is a string."); 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// This function must accept the returned record as a parameter. 
  /// </param> 
  this._callbackParameterCheck(successCallback, "SDK.JQuery.retrieveRecord requires the successCallback parameter is a function."); 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.retrieveRecord requires the errorCallback parameter is a function.");

  var systemQueryOptions = "";

  if (select != null || expand != null) { 
   systemQueryOptions = "?"; 
   if (select != null) { 
    var selectString = "$select=" + select; 
    if (expand != null) { 
     selectString = selectString + "," + expand; 
    } 
    systemQueryOptions = systemQueryOptions + selectString; 
   } 
   if (expand != null) { 
    systemQueryOptions = systemQueryOptions + "&$expand=" + expand; 
   } 
  }

  $.ajax({ 
   type: "GET", 
   contentType: "application/json; charset=utf-8", 
   datatype: "json", 
   url: this._ODataPath() + type + "Set" + "(guid'" + id + "')" + systemQueryOptions, 
   beforeSend: function (xhr) { 
    //Specifying this header ensures that the results will be returned as JSON.             
    xhr.setRequestHeader("Accept", "application/json"); 
   }, 
   success: function (data, textStatus, xhr) { 
    //JQuery does not provide an opportunity to specify a date reviver so this code 
   // parses the xhr.responseText rather than use the data parameter passed by JQuery. 
    successCallback(JSON.parse(xhr.responseText, SDK.JQuery._dateReviver).d); 
   }, 
   error: function (xhr, textStatus, errorThrown) { 
    errorCallback(SDK.JQuery._errorHandler(xhr)); 
   } 
  }); 
}, 
updateRecord: function (id, object, type, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to update a record. 
  ///</summary> 
  ///<param name="id" type="String"> 
  /// A String representing the GUID value for the record to retrieve. 
  ///</param> 
  this._stringParameterCheck(id, "SDK.JQuery.updateRecord requires the id parameter."); 
  ///<param name="object" type="Object"> 
  /// A JavaScript object with properties corresponding to the Schema Names for 
  /// entity attributes that are valid for update operations. 
  ///</param> 
  this._parameterCheck(object, "SDK.JQuery.updateRecord requires the object parameter."); 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to retrieve. 
  /// For an Account record, use "Account" 
  ///</param> 
  this._stringParameterCheck(type, "SDK.JQuery.updateRecord requires the type parameter."); 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function. 
  /// </param> 
  this._callbackParameterCheck(successCallback, "SDK.JQuery.updateRecord requires the successCallback is a function."); 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.updateRecord requires the errorCallback is a function.");

  var jsonEntity = window.JSON.stringify(object);

  $.ajax({ 
   type: "POST", 
   contentType: "application/json; charset=utf-8", 
   datatype: "json", 
   data: jsonEntity, 
   url: this._ODataPath() + type + "Set" + "(guid'" + id + "')", 
   beforeSend: function (xhr) { 
    //Specifying this header ensures that the results will be returned as JSON.             
    xhr.setRequestHeader("Accept", "application/json"); 
    //Specify the HTTP method MERGE to update just the changes you are submitting.             
    xhr.setRequestHeader("X-HTTP-Method", "MERGE"); 
   }, 
   success: function (data, textStatus, xhr) { 
   //Nothing is returned to the success function 
    successCallback(); 
   }, 
   error: function (xhr, textStatus, errorThrown) { 
    errorCallback(SDK.JQuery._errorHandler(xhr)); 
   } 
  }); 
}, 
deleteRecord: function (id, type, successCallback, errorCallback) { 
  ///<summary> 
  /// Sends an asynchronous request to delete a record. 
  ///</summary> 
  ///<param name="id" type="String"> 
  /// A String representing the GUID value for the record to delete. 
  ///</param> 
  this._stringParameterCheck(id, "SDK.JQuery.deleteRecord requires the id parameter."); 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type record to delete. 
  /// For an Account record, use "Account" 
  ///</param> 
  this._stringParameterCheck(type, "SDK.JQuery.deleteRecord requires the type parameter."); 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called by a successful response. 
  /// Nothing will be returned to this function. 
  /// </param> 
  this._callbackParameterCheck(successCallback, "SDK.JQuery.deleteRecord requires the successCallback is a function."); 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.deleteRecord requires the errorCallback is a function.");

  $.ajax({ 
   type: "POST", 
   contentType: "application/json; charset=utf-8", 
   datatype: "json", 
   url: this._ODataPath() + type + "Set(guid'" + id + "')", 
   beforeSend: function (XMLHttpRequest) { 
    //Specifying this header ensures that the results will be returned as JSON.                 
    XMLHttpRequest.setRequestHeader("Accept", "application/json"); 
    //Specify the HTTP method DELETE to perform a delete operation.                 
    XMLHttpRequest.setRequestHeader("X-HTTP-Method", "DELETE"); 
   }, 
   success: function (data, textStatus, xhr) { 
   // Nothing is returned to the success function. 
    successCallback(); 
   }, 
   error: function (xhr, textStatus, errorThrown) { 
    errorCallback(SDK.JQuery._errorHandler(xhr)); 
   } 
  }); 
}, 
retrieveMultipleRecords: function (type, options, successCallback, errorCallback, OnComplete) { 
  ///<summary> 
  /// Sends an asynchronous request to retrieve records. 
  ///</summary> 
  ///<param name="type" type="String"> 
  /// The Schema Name of the Entity type records to retrieve 
  /// For an Account record, use "Account" 
  ///</param> 
  this._stringParameterCheck(type, "SDK.JQuery.retrieveMultipleRecords requires the type parameter is a string."); 
  ///<param name="options" type="String"> 
  /// A String representing the OData System Query Options to control the data returned 
  /// Do not include the $top option, use the top parameters to set the maximum number of records to return. 
  ///</param> 
  if (options != null) 
   this._stringParameterCheck(options, "SDK.JQuery.retrieveMultipleRecords requires the options parameter is a string."); 
  ///<param name="successCallback" type="Function"> 
  /// The function that will be passed through and be called for each page of records returned. 
  /// This function should loop through the results and push the records into an array. 
  /// </param> 
  this._callbackParameterCheck(successCallback, "SDK.JQuery.retrieveMultipleRecords requires the successCallback parameter is a function."); 
  ///<param name="errorCallback" type="Function"> 
  /// The function that will be passed through and be called by a failed response. 
  /// This function must accept an Error object as a parameter. 
  /// </param> 
  this._callbackParameterCheck(errorCallback, "SDK.JQuery.retrieveMultipleRecords requires the errorCallback parameter is a function."); 
  ///<param name="OnComplete" type="Function"> 
  /// The function that will be called when all the requested records have been returned. 
  /// No parameters are passed to this function. 
  /// </param> 
  this._callbackParameterCheck(OnComplete, "SDK.JQuery.retrieveMultipleRecords requires the OnComplete parameter is a function.");

  var optionsString; 
  if (options != null) { 
   if (options.charAt(0) != "?") { 
    optionsString = "?" + options; 
   } 
   else 
   { optionsString = options; } 
  }

  $.ajax({ 
   type: "GET", 
   contentType: "application/json; charset=utf-8", 
   datatype: "json", 
   url: this._ODataPath() + type + "Set" + optionsString, 
   beforeSend: function (XMLHttpRequest) { 
    //Specifying this header ensures that the results will be returned as JSON.             
    XMLHttpRequest.setRequestHeader("Accept", "application/json"); 
   }, 
   success: function (data, textStatus, xhr) { 
    if (data && data.d && data.d.results) { 
     successCallback(JSON.parse(xhr.responseText, SDK.JQuery._dateReviver).d.results); 
     if (data.d.__next != null) { 
      var queryOptions = data.d.__next.substring((SDK.JQuery._ODataPath() + type + "Set").length); 
      SDK.JQuery.retrieveMultipleRecords(type, queryOptions, successCallback, errorCallback, OnComplete); 
     } 
     else 
     { OnComplete(); } 
    } 
   }, 
   error: function (xhr, textStatus, errorThrown) { 
    errorCallback(SDK.JQuery._errorHandler(xhr)); 
   } 
  }); 
}, 
__namespace: true 
};

    （三） Silverlight

    Silverlight使用的都是异步操作。参见如何创建一个Silverlight 程序。

    1. 返回少于50条记录

    <UserControl xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"  x:Class="SilverlightApplication2.MainPage" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:local="clr-namespace:SilverlightApplication2" 
    mc:Ignorable="d" 
    d:DesignHeight="300" d:DesignWidth="400">      

    <Grid x:Name="LayoutRoot" Background="White">

        <StackPanel x:Name="MessagePanel" VerticalAlignment="Top"> 
            <sdk:Label x:Name="myLabel"  Content=""/> 
            <sdk:DataGrid x:Name="myDataGrid" AutoGenerateColumns="False" IsReadOnly="True" > 
                <sdk:DataGrid.Columns> 
                    <sdk:DataGridTextColumn x:Name="FirstNameColumn" Header="First Name" Binding="{Binding FirstName, Mode=OneTime}" /> 
                    <sdk:DataGridTextColumn x:Name="LastNameColumn" Header="Last Name" Binding="{Binding LastName, Mode=OneTime}" /> 
                </sdk:DataGrid.Columns> 
            </sdk:DataGrid> 
        </StackPanel> 
    </Grid> 
</UserControl> 
    using System; 
using System.Data.Services.Client; 
using System.Linq; 
using System.Threading; 
using System.Windows.Controls; 
using SilverlightApplication2.CrmODataService; 
using SilverlightApplication2.Utilities;

namespace SilverlightApplication2 
{ 
    public partial class MainPage : UserControl 
    { 
        private SynchronizationContext _syncContext; 
        private escrmContext _context; 
        private String _serverUrl;

        public MainPage() 
        { 
            InitializeComponent();

            //Keeps a reference to the UI thread 
            _syncContext = SynchronizationContext.Current;

            //Get the ServerUrl (ServerUrl is formatted differently OnPremise than OnLine) 
            _serverUrl = ServerUtility.GetServerUrl();

            if (!String.IsNullOrEmpty(_serverUrl)) 
            {

                //Setup Context 
                _context = new escrmContext(new Uri(String.Format("{0}/xrmservices/2011/organizationdata.svc/", 
                        _serverUrl), UriKind.Absolute));

                //This is important because if the entity has new 
                //attributes added the code will fail. 
                _context.IgnoreMissingProperties = true;

                SearchContacts(); 
            } 
            else 
            { 
                //No ServerUrl was found. Display message. 
                MessagePanel.Children.Add(new TextBlock() 
                { 
                    Text = 
                        "Unable to access server url. Launch this Silverlight " + 
                        "Web Resource from a CRM Form OR host it in a valid " + 
                        "HTML Web Resource with a " + 
                        "<script src='ClientGlobalContext.js.aspx' " + 
                        "type='text/javascript'></script>" 
                }); 
            } 
        }

        private void SearchContacts() 
        { 
            DataServiceQuery<Contact> query = (DataServiceQuery<Contact>)_context.ContactSet.Where(x => x.StateCode.Value.Value == 0); 
            query.BeginExecute(OnContactSearchComplete, query); 
        }

        private void OnContactSearchComplete(IAsyncResult result) 
        { 
            try 
            { 
                //Get the original query back from the result. 
                DataServiceQuery<Contact> query = result.AsyncState as DataServiceQuery<Contact>; 
                var itemsource = new DataServiceCollection<Contact>(query.EndExecute(result)); 
                this.myDataGrid.ItemsSource = itemsource; 
                myLabel.Content = "There are " + itemsource.Count + " contacts"; 
            } 
            catch (SystemException se) 
            { 
                _syncContext.Send(new SendOrPostCallback(showErrorDetails), se); 
            } 
        }

        private void showErrorDetails(object ex) 
        { 
            //Assure the control is visible 
            MessagePanel.Visibility = System.Windows.Visibility.Visible;

            Exception exception = (Exception)ex; 
            String type = exception.GetType().ToString();

            MessagePanel.Children.Add(new TextBlock() 
            { 
                Text = 
                    String.Format("{0} Message: {1}", type, exception.Message) 
            });

            MessagePanel.Children.Add(new TextBlock() 
            { 
                Text = 
                    String.Format("Stack: {0}", exception.StackTrace) 
            });

            if (exception.InnerException != null) 
            { 
                String exceptType = exception.InnerException.GetType().ToString(); 
                MessagePanel.Children.Add(new TextBlock() 
                { 
                    Text = 
                        String.Format("InnerException: {0} : {1}", exceptType, 
                        exception.InnerException.Message) 
                }); 
            } 
        } 
    } 
}

    2. 返回大于50条记录

    <UserControl xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"  x:Class="SilverlightApplication2.MainPage" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"    
    mc:Ignorable="d" 
    d:DesignHeight="300" d:DesignWidth="400">      

    <Grid x:Name="LayoutRoot" Background="White">

        <StackPanel x:Name="MessagePanel" VerticalAlignment="Top" Height="145"> 
            <sdk:Label x:Name="myLabel"  Content=""/> 
        </StackPanel> 
        
        <sdk:DataGrid x:Name="myDataGrid" AutoGenerateColumns="False" IsReadOnly="True" ScrollViewer.VerticalScrollBarVisibility="Visible" Margin="0,71,0,0"> 
            <sdk:DataGrid.Columns> 
                <sdk:DataGridTextColumn x:Name="FirstNameColumn" Header="First Name" Binding="{Binding FirstName, Mode=OneTime}" /> 
                <sdk:DataGridTextColumn x:Name="LastNameColumn" Header="Last Name" Binding="{Binding LastName, Mode=OneTime}" /> 
            </sdk:DataGrid.Columns> 
        </sdk:DataGrid>

    </Grid> 
</UserControl> 
    using System; 
using System.Data.Services.Client; 
using System.Linq; 
using System.Threading; 
using System.Windows.Controls; 
using SilverlightApplication2.CrmODataService; 
using SilverlightApplication2.Utilities;

namespace SilverlightApplication2 
{ 
    public partial class MainPage : UserControl 
    { 
        private SynchronizationContext _syncContext; 
        private escrmContext _context; 
        private String _serverUrl; 
        public DataServiceCollection<Contact> ContactCollection;

        public MainPage() 
        { 
            InitializeComponent();

            //Keeps a reference to the UI thread 
            _syncContext = SynchronizationContext.Current;

            //Get the ServerUrl (ServerUrl is formatted differently OnPremise than OnLine) 
            _serverUrl = ServerUtility.GetServerUrl();

            if (!String.IsNullOrEmpty(_serverUrl)) 
            {

                //Setup Context 
                _context = new escrmContext(new Uri(String.Format("{0}/xrmservices/2011/organizationdata.svc/", 
                        _serverUrl), UriKind.Absolute));

                //This is important because if the entity has new 
                //attributes added the code will fail. 
                _context.IgnoreMissingProperties = true;

                SearchContacts(); 
            } 
            else 
            { 
                //No ServerUrl was found. Display message. 
                MessagePanel.Children.Add(new TextBlock() 
                { 
                    Text = 
                        "Unable to access server url. Launch this Silverlight " + 
                        "Web Resource from a CRM Form OR host it in a valid " + 
                        "HTML Web Resource with a " + 
                        "<script src='ClientGlobalContext.js.aspx' " + 
                        "type='text/javascript'></script>" 
                }); 
            } 
        }

        private void SearchContacts() 
        { 
            DataServiceQuery<Contact> query = (DataServiceQuery<Contact>)_context.ContactSet.AddQueryOption("$select", "FirstName,LastName").Where(x => x.StateCode.Value.Value == 0); 
            query.BeginExecute(ProcessPages<Contact>, new PagingContext<Contact>() 
            { 
                ServiceContext = _context, 
                Query = query, 
                PageProcessor = delegate(DataServiceCollection<Contact> results) 
                { 
                    try 
                    {

                        if (null == ContactCollection) 
                        { 
                            ContactCollection = new DataServiceCollection<Contact>(_context); 
                            ContactCollection.Load(results); 
                        } 
                        else 
                        { 
                            for (int i = 0; i < results.Count; i++) 
                            { 
                                ContactCollection.Add(results[i]); 
                            } 
                        } 
                        myLabel.Content = "There are " + ContactCollection.Count + " contacts"; 
                        this.myDataGrid.ItemsSource = ContactCollection; 
                    } 
                    catch (Exception ex) 
                    { 
                        _syncContext.Send(new SendOrPostCallback(showErrorDetails), ex); 
                    }

                    return true; 
                } 
            }); 
        }

        private void ProcessPages<T>(IAsyncResult result) 
        {            
            try 
            { 
                PagingContext<T> context = (PagingContext<T>)result.AsyncState;

                QueryOperationResponse<T> response; 
                if (null == context.Query) 
                {                    
                    response = (QueryOperationResponse<T>)context.ServiceContext.EndExecute<T>(result); 
                } 
                else 
                { 
                    response = (QueryOperationResponse<T>)context.Query.EndExecute(result); 
                    context.Query = null; 
                }

                DataServiceCollection<T> results = new DataServiceCollection<T>(response);

                if (null != context.PageProcessor && !context.PageProcessor(results)) 
                { 
                    //Stop processing 
                    
                    return; 
                }

                DataServiceQueryContinuation<T> token = results.Continuation; 
                if (null == token) 
                { 
                    System.Windows.MessageBox.Show("complete"); 
                    return; 
                }

                context.ServiceContext.BeginExecute(token, ProcessPages<T>, context); 
            } 
            catch (Exception ex) 
            { 
                throw ex; 
            } 
        }

        private void showErrorDetails(object ex) 
        { 
            //Assure the control is visible 
            MessagePanel.Visibility = System.Windows.Visibility.Visible;

            Exception exception = (Exception)ex; 
            String type = exception.GetType().ToString();

            MessagePanel.Children.Add(new TextBlock() 
            { 
                Text = 
                    String.Format("{0} Message: {1}", type, exception.Message) 
            });

            MessagePanel.Children.Add(new TextBlock() 
            { 
                Text = 
                    String.Format("Stack: {0}", exception.StackTrace) 
            });

            if (exception.InnerException != null) 
            { 
                String exceptType = exception.InnerException.GetType().ToString(); 
                MessagePanel.Children.Add(new TextBlock() 
                { 
                    Text = 
                        String.Format("InnerException: {0} : {1}", exceptType, 
                        exception.InnerException.Message) 
                }); 
            } 
        } 
    }

    sealed class PagingContext<T> 
    { 
        public DataServiceContext ServiceContext { get; set; }

        public DataServiceQuery<T> Query { get; set; }

        public Func<DataServiceCollection<T>, bool> PageProcessor { get; set; } 
    } 
}

    （四） LINQ

    using System; 
using Microsoft.Xrm.Sdk.Discovery; 
using Microsoft.Xrm.Sdk.Client; 
using System.Configuration; 
using Microsoft.Xrm.Sdk; 
using Microsoft.Crm.Sdk.Messages; 
using System.Linq;

namespace CRM.LINQTest 
{ 
    class Program 
    { 
        static void Main(string[] args) 
        { 
            string _discoveryServiceAddress = ConfigurationManager.AppSettings["DiscoveryServiceAddress"]; 
            IServiceManagement<IDiscoveryService> serviceManagement = ServiceConfigurationFactory.CreateManagement<IDiscoveryService>(new Uri(_discoveryServiceAddress)); 
            AuthenticationProviderType endpointType = serviceManagement.AuthenticationType;

            AuthenticationCredentials authCredentials = GetCredentials(endpointType); 
           

            String organizationUri = ConfigurationManager.AppSettings["OrganizationServiceAddress"]; 
            if (!String.IsNullOrWhiteSpace(organizationUri)) 
            { 
                IServiceManagement<IOrganizationService> orgServiceManagement = ServiceConfigurationFactory.CreateManagement<IOrganizationService>(new Uri(organizationUri));

                // Set the credentials. 
                AuthenticationCredentials credentials = GetCredentials(endpointType);

                // Get the organization service proxy. 
                using (OrganizationServiceProxy organizationProxy = GetProxy<IOrganizationService, OrganizationServiceProxy>(orgServiceManagement, credentials)) 
                { 
                    // This statement is required to enable early-bound type support. 
                    organizationProxy.EnableProxyTypes(); 
                    IOrganizationService _service = (IOrganizationService)organizationProxy; 
                    ServiceContext svcContext = new ServiceContext(_service); 
                    var accounts = (from a in svcContext.AccountSet 
                                   select new Account() 
                                   { 
                                    Name = a.Name, 
                                   }).ToArray(); 
                    int i = 1; 
                    foreach (var a in accounts) 
                    { 
                        Console.WriteLine(string.Format("{0}/{2}: {1}", i, a.Name, accounts.Count())); 
                        i++; 
                    } 
                } 
            }

        }

        private static AuthenticationCredentials GetCredentials(AuthenticationProviderType endpointType) 
        { 
            string _userName = ConfigurationManager.AppSettings["UserName"]; 
            string _password = ConfigurationManager.AppSettings["Password"]; 
            string _domain = ConfigurationManager.AppSettings["Domain"];

            AuthenticationCredentials authCredentials = new AuthenticationCredentials(); 
            switch (endpointType) 
            { 
                case AuthenticationProviderType.ActiveDirectory: 
                    authCredentials.ClientCredentials.Windows.ClientCredential = new System.Net.NetworkCredential(_userName, _password, _domain); 
                    break; 
                case AuthenticationProviderType.Federation: 
                case AuthenticationProviderType.OnlineFederation: 
                    authCredentials.ClientCredentials.UserName.UserName = _userName; 
                    authCredentials.ClientCredentials.UserName.Password = _password; 
                    break; 
                default:                     
                    break; 
            }

            return authCredentials; 
        }

        private static TProxy GetProxy<TService, TProxy>(IServiceManagement<TService> serviceManagement, AuthenticationCredentials authCredentials) 
            where TService : class 
            where TProxy : ServiceProxy<TService> 
        { 
            Type classType = typeof(TProxy);

            if (serviceManagement.AuthenticationType != AuthenticationProviderType.ActiveDirectory) 
            { 
                AuthenticationCredentials tokenCredentials = serviceManagement.Authenticate(authCredentials); 
                // Obtain discovery/organization service proxy for Federated, LiveId and OnlineFederated environments. 
                // Instantiate a new class of type using the 2 parameter constructor of type IServiceManagement and SecurityTokenResponse. 
                return (TProxy)classType 
                    .GetConstructor(new Type[] { typeof(IServiceManagement<TService>), typeof(SecurityTokenResponse) }) 
                    .Invoke(new object[] { serviceManagement, tokenCredentials.SecurityTokenResponse }); 
            }

            // Obtain discovery/organization service proxy for ActiveDirectory environment. 
            // Instantiate a new class of type using the 2 parameter constructor of type IServiceManagement and ClientCredentials. 
            return (TProxy)classType 
                .GetConstructor(new Type[] { typeof(IServiceManagement<TService>), typeof(System.ServiceModel.Description.ClientCredentials) }) 
                .Invoke(new object[] { serviceManagement, authCredentials.ClientCredentials }); 
        }        
    } 
}

    （五） FetchXML

    using System; 
using Microsoft.Xrm.Sdk.Discovery; 
using Microsoft.Xrm.Sdk.Client; 
using System.Configuration; 
using Microsoft.Xrm.Sdk; 
using Microsoft.Crm.Sdk.Messages; 
using System.Linq; 
using System.IO; 
using System.Xml; 
using System.Text;

namespace CRM.FetchXMLTest 
{ 
    class Program 
    { 
        private static string CreateXml(string xml, int page) 
        { 
            StringReader stringReader = new StringReader(xml); 
            XmlTextReader reader = new XmlTextReader(stringReader);

            // Load document 
            XmlDocument doc = new XmlDocument(); 
            doc.Load(reader);

            return CreateXml(doc, page); 
        }

        private static string CreateXml(XmlDocument doc, int page) 
        { 
            XmlAttributeCollection attrs = doc.DocumentElement.Attributes;

            XmlAttribute pageAttr = doc.CreateAttribute("page"); 
            pageAttr.Value = System.Convert.ToString(page); 
            attrs.Append(pageAttr);

            StringBuilder sb = new StringBuilder(1024); 
            StringWriter stringWriter = new StringWriter(sb);

            XmlTextWriter writer = new XmlTextWriter(stringWriter); 
            doc.WriteTo(writer); 
            writer.Close();

            return sb.ToString(); 
        }        

        static void Main(string[] args) 
        { 
            string _discoveryServiceAddress = ConfigurationManager.AppSettings["DiscoveryServiceAddress"]; 
            IServiceManagement<IDiscoveryService> serviceManagement = ServiceConfigurationFactory.CreateManagement<IDiscoveryService>(new Uri(_discoveryServiceAddress)); 
            AuthenticationProviderType endpointType = serviceManagement.AuthenticationType;

            AuthenticationCredentials authCredentials = GetCredentials(endpointType);


            String organizationUri = ConfigurationManager.AppSettings["OrganizationServiceAddress"]; 
            if (!String.IsNullOrWhiteSpace(organizationUri)) 
            { 
                IServiceManagement<IOrganizationService> orgServiceManagement = ServiceConfigurationFactory.CreateManagement<IOrganizationService>(new Uri(organizationUri));

                // Set the credentials. 
                AuthenticationCredentials credentials = GetCredentials(endpointType);

                // Get the organization service proxy. 
                using (OrganizationServiceProxy organizationProxy = GetProxy<IOrganizationService, OrganizationServiceProxy>(orgServiceManagement, credentials)) 
                { 
                    //organizationProxy.Timeout = new TimeSpan(1, 0, 0, 0); 
                    string fetch2 = @"<fetch mapping='logical'> 
                                         <entity name='account'> 
                                            <attribute name='accountid'/> 
                                            <attribute name='name'/> 
                                         </entity> 
                                       </fetch> ";

                    

                    int i = 1; 
                    // Initialize the page number. 
                    int pageNumber = 1;


                    while (true) 
                    { 
                        // Build fetchXml string with the placeholders. 
                        string xml = CreateXml(fetch2, pageNumber);

                        EntityCollection returnCollection = organizationProxy.RetrieveMultiple(new Microsoft.Xrm.Sdk.Query.FetchExpression(xml));

                        foreach (var a in returnCollection.Entities) 
                        { 
                            Console.WriteLine(string.Format("{0}: {1}", i, a["name"])); 
                            i++; 
                        }

                        // Check for morerecords, if it returns 1. 
                        if (returnCollection.MoreRecords) 
                        { 
                            // Increment the page number to retrieve the next page. 
                            pageNumber++; 
                        } 
                        else 
                        { 
                            // If no more records in the result nodes, exit the loop. 
                            break; 
                        } 
                    } 
                } 
            }

        }

        private static AuthenticationCredentials GetCredentials(AuthenticationProviderType endpointType) 
        { 
            string _userName = ConfigurationManager.AppSettings["UserName"]; 
            string _password = ConfigurationManager.AppSettings["Password"]; 
            string _domain = ConfigurationManager.AppSettings["Domain"];

            AuthenticationCredentials authCredentials = new AuthenticationCredentials(); 
            switch (endpointType) 
            { 
                case AuthenticationProviderType.ActiveDirectory: 
                    authCredentials.ClientCredentials.Windows.ClientCredential = new System.Net.NetworkCredential(_userName, _password, _domain); 
                    break; 
                case AuthenticationProviderType.Federation: 
                case AuthenticationProviderType.OnlineFederation: 
                    authCredentials.ClientCredentials.UserName.UserName = _userName; 
                    authCredentials.ClientCredentials.UserName.Password = _password; 
                    break; 
                default: 
                    break; 
            }

            return authCredentials; 
        }

        private static TProxy GetProxy<TService, TProxy>(IServiceManagement<TService> serviceManagement, AuthenticationCredentials authCredentials) 
            where TService : class 
            where TProxy : ServiceProxy<TService> 
        { 
            Type classType = typeof(TProxy);

            if (serviceManagement.AuthenticationType != AuthenticationProviderType.ActiveDirectory) 
            { 
                AuthenticationCredentials tokenCredentials = serviceManagement.Authenticate(authCredentials); 
                // Obtain discovery/organization service proxy for Federated, LiveId and OnlineFederated environments. 
                // Instantiate a new class of type using the 2 parameter constructor of type IServiceManagement and SecurityTokenResponse. 
                return (TProxy)classType 
                    .GetConstructor(new Type[] { typeof(IServiceManagement<TService>), typeof(SecurityTokenResponse) }) 
                    .Invoke(new object[] { serviceManagement, tokenCredentials.SecurityTokenResponse }); 
            }

            // Obtain discovery/organization service proxy for ActiveDirectory environment. 
            // Instantiate a new class of type using the 2 parameter constructor of type IServiceManagement and ClientCredentials. 
            return (TProxy)classType 
                .GetConstructor(new Type[] { typeof(IServiceManagement<TService>), typeof(System.ServiceModel.Description.ClientCredentials) }) 
                .Invoke(new object[] { serviceManagement, authCredentials.ClientCredentials }); 
        }       
    } 
}

    Retrieve所有记录

    private static List<Entity> GetAllAccounts(OrganizationServiceProxy organizationProxy) 
{ 
    string fetch2 = @"<fetch mapping='logical'> 
                                    <entity name='account'> 
                                    <attribute name='accountid'/> 
                                    <attribute name='name'/> 
                                    </entity> 
                                </fetch> ";

    List<Entity> result = new List<Entity>(); 
    // Initialize the page number. 
    int pageNumber = 1;

    while (true) 
    { 
        // Build fetchXml string with the placeholders. 
        string xml = CreateXml(fetch2, pageNumber);

        EntityCollection returnCollection = organizationProxy.RetrieveMultiple(new Microsoft.Xrm.Sdk.Query.FetchExpression(xml));

        foreach (var a in returnCollection.Entities) 
        { 
            result.Add(a); 
        }

        // Check for morerecords, if it returns 1. 
        if (returnCollection.MoreRecords) 
        { 
            // Increment the page number to retrieve the next page. 
            pageNumber++; 
        } 
        else 
        { 
            // If no more records in the result nodes, exit the loop. 
            break; 
        } 
    }

    return result; 
}

    （六） Query Expression

    // Get the organization service proxy. 
using (OrganizationServiceProxy organizationProxy = GetProxy<IOrganizationService, OrganizationServiceProxy>(orgServiceManagement, credentials)) 
{ 
    Microsoft.Xrm.Sdk.Query.QueryExpression query = new Microsoft.Xrm.Sdk.Query.QueryExpression 
    { 
        EntityName = "account", 
        ColumnSet = new ColumnSet("name")                        
    }; 
                   

    int i = 1; 
    query.PageInfo = new PagingInfo(); 
    query.PageInfo.PageNumber = 1; 
    query.PageInfo.PagingCookie = null;

    while (true) 
    { 
        // Retrieve the page. 
        EntityCollection ec = organizationProxy.RetrieveMultiple(query);

        if (ec.Entities != null) 
        { 
            // Retrieve all records from the result set. 
            foreach (var a in ec.Entities) 
            { 
                Console.WriteLine(string.Format("{0}: {1}", i, a["name"])); 
                i++; 
            }

        }

        // Check for more records, if it returns true. 
        if (ec.MoreRecords) 
        { 
            // Increment the page number to retrieve the next page. 
            query.PageInfo.PageNumber++; 
            // Set the paging cookie to the paging cookie returned from current results. 
            query.PageInfo.PagingCookie = ec.PagingCookie; 
        } 
        else 
        { 
            // If no more records are in the result nodes, exit the loop. 
            break; 
        } 
    }
}

    Retrieve所有记录

    private static List<Entity> GetAllAccounts(OrganizationServiceProxy organizationProxy) 
{ 
    List<Entity> result = new List<Entity>(); 
    Microsoft.Xrm.Sdk.Query.QueryExpression query = new Microsoft.Xrm.Sdk.Query.QueryExpression 
    { 
        EntityName = "account", 
        ColumnSet = new ColumnSet("name") 
    };


    int i = 1; 
    query.PageInfo = new PagingInfo(); 
    query.PageInfo.PageNumber = 1; 
    query.PageInfo.PagingCookie = null;

    while (true) 
    { 
        // Retrieve the page. 
        EntityCollection ec = organizationProxy.RetrieveMultiple(query);

        if (ec.Entities != null) 
        { 
            // Retrieve all records from the result set. 
            foreach (var a in ec.Entities) 
            { 
                result.Add(a); 
            }

        }

        // Check for more records, if it returns true. 
        if (ec.MoreRecords) 
        { 
            // Increment the page number to retrieve the next page. 
            query.PageInfo.PageNumber++; 
            // Set the paging cookie to the paging cookie returned from current results. 
            query.PageInfo.PagingCookie = ec.PagingCookie; 
        } 
        else 
        { 
            // If no more records are in the result nodes, exit the loop. 
            break; 
        } 
    }

    return result; 
}
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  • 原文地址：https://www.cnblogs.com/jfzhu/p/2947306.html
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