RadGrid RaisePostBackEvent 刷新页面问题。

RadGrid 中点击编辑某条记录，弹出窗口，关闭窗口后，想让RadGrid自动刷新一下，大家碰到过不？

官方网站上有专门的说明文档：

　　Making postback/AJAX request from javascript in user control/webform/MasterPage

一、“用户控件”的使用。

后台代码：

C#
public class WebUserControl1 : System.Web.UI.UserControl, IPostBackEventHandler { public void RaisePostBackEvent(string eventArgument) { 　　　　switch(eventArgument) 　　　{ 　　　　 case "Rebind": 　　　　RadGrid1.Rebind(); 　　　　break; 　　　} } }

前台代码：

　　var radGrid1_ClientID = "<%=RadGrid1.ClientID %>";

注意：这里取的是控件页面的UniqueID，如果是WebForm页面，这里的值应为"<%=RadGrid1.ClientID %>"

var radGrid1_UniqueID = "<%=this.UniqueID %>";

　　window[radGrid1_ClientID].AjaxRequest(radGrid1_UniqueID, "Rebind");

参数说明：

__doPostBack(eventTarget, eventArgument)

or

RadGridClientObject.AjaxRequest(eventTarget, eventArgument)

eventTarget

The control which should raise postback event. If this control is directly on the HtmlForm, you can use the control's UniqueID or ClientID. Otherwise if your control is in a INamingContainer, you must use the control's UniqueID. For UserControl you should use always the user control's UniqueID

eventArgument

This is optional argument for the event, used for passing some data on the server (which can be processed further)

eventArgument：主要用来判断是从哪个地方返回来刷新数据的。

二、MasterPage页面的使用

1.如果RadGrid在asp:ContentPlaceHolder 里：

后台代码：

C#
public partial class MasterPage : System.Web.UI.MasterPage, IPostBackEventHandler { public void RaisePostBackEvent(string eventArgument) { switch (eventArgument) { case "Rebind": RadGrid1.Rebind(); break; } } }

前台代码：

<head runat="server">
   <title>Untitled Page</title>
<script type="text/javascript">
function RowDblClick(index)
{
   grid.AjaxRequest("<%= this.UniqueID %>", "Rebind");
}
</script>
</head>
<body>
   <form id="form1" runat="server">
       <div>
           <script type="text/javascript">
            var grid;

            function GridCreated()
             {
               grid = this;
            }
           </script>
           <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
               <rad:RadGrid ID="RadGrid1" DataSourceID="AccessDataSource1"
                runat= "server" AutoGenerateColumns="True">
                   <MasterTableView DataSourceID="AccessDataSource1">
                   </MasterTableView>
                   <ClientSettings>
                       <ClientEvents OnGridCreated="GridCreated" OnRowDblClick="RowDblClick"></ClientEvents>
                   </ClientSettings>
               </rad:RadGrid>
   <asp:AccessDataSource ID="AccessDataSource1" DataFile="~/Nwind.mdb"
    SelectCommand= "SELECT TOP 10 CustomerID, CompanyName, ContactName, ContactTitle,
    Address, PostalCode FROM Customers" runat="server"></asp:AccessDataSource>
  </asp:ContentPlaceHolder>

2.如果RadGrid在asp:Content里：

后台代码:

C#
protected void chkIsClosed_PreRender(object source, System.EventArgs e) { (source as CheckBox).Attributes("onclick") = "PerformRequest()"; }

三、ASPX页面的使用

后台代码：

C#
protected override void RaisePostBackEvent(IPostBackEventHandler source, String eventArgument) { base.RaisePostBackEvent(source, eventArgument); switch(eventArgument) { case "Rebind": RadGrid1.Rebind(); break; } }

前台代码：

<rad:radgrid id="RadGrid1" runat="server"
       EnableAJAX= "True" AllowSorting="True" AllowPaging="True">
</rad:radgrid>
    <br />
    <input type=button value="Refresh" onclick='window["<%= RadGrid1.ClientID %>"].AjaxRequest( "<%= RadGrid1.UniqueID%>", "Rebind")' />

RadGrid 中的很多功能需要再仔细的挖掘，希望对大家的工作有所帮助。

欢迎交流。

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原文地址：https://www.cnblogs.com/ajaxleoxu/p/1344469.html