EnableSortingAndPagingCallbacks Property
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GridView.EnableSortingAndPagingCallbacks Property

 

Gets or sets a value indicating whether client-side callbacks are used for sorting and paging operations.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public virtual bool EnableSortingAndPagingCallbacks { get; set; }

Property Value

Type: System.Boolean

true to use client-side callbacks for sorting and paging operations; otherwise, false. The default is false.

Exception Condition
NotSupportedException

The Columns collection contains a column that does not support callbacks, such as TemplateField.

By default, when a sorting or paging operation is performed, the GridView control posts back to the server to perform the operation. When the EnableSortingAndPagingCallbacks property is set to true, a service is called on the client to perform sorting and paging operations, which eliminates the need to post back to the server.

System_CAPS_noteNote

Not all browsers support this feature. To determine whether a browser supports this feature, use the SupportsCallback property.

All columns in the Columns collection must support callbacks for this feature to work. If the Columns collection contains a column that does not support callbacks, such as TemplateField, a NotSupportedException exception is raised.

The following example demonstrates how to use the EnableSortingAndPagingCallbacks property to enable client-side callbacks for sorting and paging operations.


<%@ Page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView EnableSortingAndPagingCallbacks Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <h3>GridView EnableSortingAndPagingCallbacks Example</h3>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSource" 
        autogeneratecolumns="true"
        emptydatatext="No data available." 
        allowpaging="true"
        allowsorting="true"
        enablesortingandpagingcallbacks="true"        
        runat="server">

      </asp:gridview>

      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSource"
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>" 
        runat="server"/>

    </form>
  </body>
</html>

.NET Framework
Available since 2.0
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