Jquery插件 Jqgrid在ASP.Net下的使用方法与实例【转】

      刚接触jqgrid的时候被它的效果震撼了，不过找到使用文档都是针对php的，asp.net的都是编译好的dll，很不方便自定义的开发。后来多次搜索和研究才在c# .net下实现了。以下简单扼要的说一下实现原理。

      先说明一下，我这个例子的实现过程大概是这样的。因为我要实现很多表格，所以，这些加载都是动态的，先用.net输出jquer调用jqgrid代码，jqgrid再调用后台代码实现数据输出。

      首先，写一个方法，功能就是实现输出jqgrid调用模块。

////////////////////////////////////方法：生成调用Jqgrid的代码////// 
private void bindProd_Sup(string tbl)
{
     string id = Request["id"];
     string jsc ="<table id='" + tbl + "_list'></table>"+  

                "<div id='" + tbl + "_pagersr'></div>" +

                "<script  type="text/javascript">" +

                "jQuery(\"#\" + tbl + \"_list\").jqGrid({" + 

                " url:'CompData.aspx?datatype="+(tbl=="cont_cst"?"cst":"sup")+"&oper=listADD&ID=" + id + "'," +

                 ///这个是后台数据处理文件，请求这个文件，将得到json格式的数据。
                " height:520," +
                " datatype: "json"," +
                " colNames:[ 'ADD','ID','SUP NUM','NAME']," +
                " colModel:[" +
                " {name:'ADD',index:'ADD', 80, sortable:false,search:false}, " +
                " {name:'ComID',index:'ComID', 45 ,hidden:true}," +
                " {name:'CompNum',index:'CompNum', 65}," +
                " {name:'CompName',index:'CompName', 320}" +
                " ]," +
                " multiselect: true," +
                " rowNum:20," +
                " rowList:[20,40,80]," +
                " pager: '#" + tbl + "_pagersr'," +
                " sortname: 'ComID'," +
                " viewrecords: true," +
                " sortorder: "desc"," +
                " caption:"COMPANY LIST"," +
            //  "{sopt:['cn','bw','eq','ne','lt','gt','ew']}," +
                " toolbar : [true,"top"] " +
                " });" +
            // "jQuery("#"+tbl+"_list").jqGrid('"+tbl+"_listGrid',{sopt:['cn','bw','eq','ne','lt','gt','ew']});"+
                "jQuery("#" + tbl + "_list").jqGrid('navGrid',"#" + tbl + "_pagersr",{edit:false,add:false,del:false}); " +
                " </script>";
        jscS.InnerHtml = jsc; ////将jqgrid调用代码输出
    }
//////////////////////////////////////////

以下是处理数据后台文件代码

 private void jsondata()
    {
        string DataType = Request.QueryString["datatype"] != null ? Request.QueryString["datatype"].ToString() : 
        string searchFiled = "";
        string indexFiled = "";
        string searchFiled_Sp1 = "";
        string searchFiled_Sp1_tbl = "";
        string searchFiled_Sp2 = "";
        string searchFiled_Sp2_tbl = "";
        string Sql = "";
        string SqlAnd = "";
        string Edit="";
        string Add="";
        string count = "";
        string countSql = "";
        string id="";
        string ids = "";
        switch (DataType)
        {
            case "SUP":
            case "CST":
            case "cst":
            case "sup":
            if (Request["oper"] == "listADD")
            {
                string ID = Request["ID"];
                string INV_ID = "";
                if (DataType == "sup")
                {
                    INV_ID = as_init.AS_GetValue("SELECT ProdNum FROM tblproduct where ProdID= " + ID);
                }
                else if (DataType == "cst")
                {
                    INV_ID = as_init.AS_GetValue("SELECT ContNum FROM tblcontact where ContID= " + ID);
                 }
                earchFiled = " A.ComID,A.CompNum,A.CompName";
                indexFiled = "A.ComID";
                Sql = " select  A.ComID,A.CompNum,A.CompName From tblcompany A";
                SqlAnd = "  WHERE  A.CompNum like '%" + DataType + "%' ";
                countSql = "select count(*) from tblcompany A ";
                Add = INV_ID + "|" + ID + "|" + DataType;
           }
           else
          {
             searchFiled = "A.ComID,A.CompNum,A.CompCreationDate,A.CompActivity,A.CompName, A.CompPostalCode,A.CompCountry";
             indexFiled = "A.ComID";
             Sql = " select A.ComID,A.CompNum,A.CompCreationDate,A.CompActivity,A.CompName, A.CompPostalCode,A.CompCountry From tblcompany A";
             SqlAnd = "  WHERE  A.CompNum like '%" + DataType + "%' ";
             countSql = "select count(*) from tblcompany A ";
             Edit = "800|580|AjaxEdit.aspx?Act=Edit|" + DataType;
           }
           break;
           case "prod_sup_l":
                id=Request["id"];
                ids = as_init.AS_GetValue("select ProdNum from tblproduct where ProdID= " + id);
                searchFiled = " A.SupNum,B.CompName,B.CompPhone,B.CompAddress,A.Sp_ID ";
                indexFiled = "Sp_ID";
                searchFiled_Sp1 = ",CompName,CompPhone,CompAddress";
                searchFiled_Sp1_tbl = "B";
                Sql = " select A.Sp_ID, A.SupNum,B.CompName,B.CompPhone,B.CompAddress  FROM  tblproductsupplier A LEFT JOIN tblcompany B ON A.SupNum=B.CompNum   ";
                SqlAnd = "  WHERE  A.ProdNum='" + ids + "' ";
                countSql = "select count(*) from tblproductsupplier A LEFT JOIN tblcompany B ON A.SupNum=B.CompNum  ";
                Edit = "";
                break;
            case "inv_carton":
                id = Request["id"];
                ids = as_init.AS_GetValue("select ActNum from tblactivity where ActIndex= " + id);
                searchFiled = "A.cartonID, A.NCarton, A.Gweight,A.GVolume ";
                indexFiled = "cartonID";
                Sql = " select A.cartonID,A.ActNum, A.NCarton, A.Gweight,A.GVolume  FROM  tblactivitycarton A";
                SqlAnd = " WHERE ActNum='" + ids + "'";
                countSql = "select count(*) from tblactivitycarton ";
                Edit = "";
                break;
        }
        string keyw = Request.QueryString["searchString"] != null ? Request.QueryString["searchString"].ToString() : "";
        string page = Request.QueryString["page"] != null ? Request.QueryString["page"].ToString() : "1"; // get the requested page
        string limit = Request.QueryString["rows"] != null ? Request.QueryString["rows"].ToString() : "10"; // get how many rows we want to have into the grid
        string sidx = Request.QueryString["sidx"] != null ? Request.QueryString["sidx"].ToString() : indexFiled; // get index row - i.e. user click to sort
        string sord = Request.QueryString["sord"] != null ? Request.QueryString["sord"].ToString() : "asc"; // get the direction
        int start = Convert.ToInt32(limit) * Convert.ToInt32(page) - Convert.ToInt32(limit);
        ///////////////////sql where'///////////////////////////////////////
        string sqlw = "";
        string searchOn = Request.QueryString["_search"] != null ? Request.QueryString["_search"].ToString() : "";

        // if(searchOn=="true") {
        string fld = Request.QueryString["searchField"] != null ? Request.QueryString["searchField"].ToString() : "";
       // Response.Write(searchFiled.IndexOf(fld)+fld);
        if (searchFiled.IndexOf(fld) > 0 && fld != "" && fld !=null)
        {
            string fldata = Request.QueryString["searchString"] != null ? Request.QueryString["searchString"].ToString() : "";
            string foper = Request.QueryString["searchOper"] != null ? Request.QueryString["searchOper"].ToString() : "";
            // costruct where
            if ( searchFiled_Sp1.IndexOf(fld)>=0)
            {
                sqlw += searchFiled_Sp1_tbl + "." + fld;
            }
            else if (searchFiled_Sp2.IndexOf(fld)>=0)
            {
                sqlw += searchFiled_Sp2_tbl + "." + fld;
            }
            else
            {
                sqlw += "  A." + fld;
            }
            switch (foper)
            {
                case "bw":
                    fldata += "%";
                    sqlw += " LIKE '" + fldata + "'";
                    break;
                case "eq":
                    if (is_numeric(fldata))
                    {
                        sqlw += " = " + fldata;
                    }
                    else
                    {
                        sqlw += " = '" + fldata + "'";
                    }
                    break;
                case "ne":
                    if (is_numeric(fldata))
                    {
                        sqlw += " <> " + fldata;
                    }
                    else
                    {
                        sqlw += " <> '" + fldata + "'";
                    }
                    break;
                case "lt":
                    if (is_numeric(fldata))
                    {
                        sqlw += " < " + fldata;
                    }
                    else
                    {
                        sqlw += " < '" + fldata + "'";
                    }
                    break;
                case "le":
                    if (is_numeric(fldata))
                    {
                        sqlw += " <= " + fldata;
                    }
                    else
                    {
                        sqlw += " <= '" + fldata + "'";
                    }
                    break;
                case "gt":
                    if (is_numeric(fldata))
                    {
                        sqlw += " > " + fldata;
                    }
                    else
                    {
                        sqlw += " > '" + fldata + "'";
                    }
                    break;
                case "ge":
                    if (is_numeric(fldata))
                    {
                        sqlw += " >= " + fldata;
                    }
                    else
                    {
                        sqlw += " >= '" + fldata + "'";
                    }
                    break;
                case "ew":
                    sqlw += " LIKE '" + fldata + "%'";
                    break;

                case "cn":
                    sqlw += " LIKE '%" + fldata + "%'";
                    break;
            }
        }
        //Response.Write(sqlw);
        if (sqlw != "")
        {
            sqlw=(SqlAnd!=""? SqlAnd+" and "+sqlw : " where "+sqlw);
        }
        else
        {
            sqlw = (SqlAnd != "" ? SqlAnd  :"");
        }
        Sql = Sql + sqlw + "  ORDER BY " + sidx + " " + sord + " LIMIT " + start + " , " + limit;
        DataTable datasinv = as_init.as_DataTab(Sql);
        count = as_init.AS_GetValue(countSql + sqlw);
        string dataJs = as_init.GetJson(datasinv, page, count, Edit, Add);
        Response.ContentType = "text/plain";
        Response.Buffer = true;
        Response.ExpiresAbsolute = DateTime.Now.AddDays(-1);
        Response.AddHeader("pragma", "no-cache");
        Response.AddHeader("cache-control", "");
        Response.CacheControl = "no-cache";
        Response.Write(dataJs);
    }

原创：美芯科技(欢迎转载，但请保留链接)