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Ajaxify RadGrid

Updated on Oct 7, 2026

You can ajaxify RadGrid to update the grid asynchronously instead of refreshing the entire page after a grid command.

AJAX updates replace only the controls configured for the update. This can reduce the amount of page markup transferred during a request, but the performance benefit depends on the page structure and the amount of data rendered by the grid.

Use RadAjaxManager, RadAjaxPanel, or the ASP.NET AJAX UpdatePanel to configure the grid for partial rendering. The following example registers RadGrid as an updated control through RadAjaxManager.

Configure RadAjaxManager to update RadGrid asynchronously

ASP.NET

<asp:ScriptManager ID="ScriptManager1" runat="server" />

<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
    <AjaxSettings>
        <telerik:AjaxSetting AjaxControlID="RadGrid1">
            <UpdatedControls>
                <telerik:AjaxUpdatedControl ControlID="RadGrid1" />
            </UpdatedControls>
        </telerik:AjaxSetting>
    </AjaxSettings>
</telerik:RadAjaxManager>

<telerik:RadGrid ID="RadGrid1" runat="server" AllowPaging="True" Width="800px" OnNeedDataSource="RadGrid1_NeedDataSource">
    <MasterTableView AutoGenerateColumns="False" DataKeyNames="OrderID">
        <Columns>
            <telerik:GridBoundColumn DataField="OrderID" DataType="System.Int32"
                FilterControlAltText="Filter OrderID column" HeaderText="OrderID"
                ReadOnly="True" SortExpression="OrderID" UniqueName="OrderID">
            </telerik:GridBoundColumn>
            <telerik:GridDateTimeColumn DataField="OrderDate" DataType="System.DateTime"
                FilterControlAltText="Filter OrderDate column" HeaderText="OrderDate"
                SortExpression="OrderDate" UniqueName="OrderDate">
            </telerik:GridDateTimeColumn>
            <telerik:GridNumericColumn DataField="Freight" DataType="System.Decimal"
                FilterControlAltText="Filter Freight column" HeaderText="Freight"
                SortExpression="Freight" UniqueName="Freight">
            </telerik:GridNumericColumn>
            <telerik:GridBoundColumn DataField="ShipName"
                FilterControlAltText="Filter ShipName column" HeaderText="ShipName"
                SortExpression="ShipName" UniqueName="ShipName">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="ShipCountry"
                FilterControlAltText="Filter ShipCountry column" HeaderText="ShipCountry"
                SortExpression="ShipCountry" UniqueName="ShipCountry">
            </telerik:GridBoundColumn>
        </Columns>
    </MasterTableView>
</telerik:RadGrid>

Bind the RadGrid used in the AJAX example

C#
using System;
using System.Linq;
using Telerik.Web.UI;

protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
{
    RadGrid1.DataSource = Enumerable.Range(1, 5).Select(index => new
    {
        OrderID = index,
        OrderDate = DateTime.Today.AddDays(-index),
        Freight = index * 10.5m,
        ShipName = "Name " + index,
        ShipCountry = "Country " + index
    });
}
VB
Imports System
Imports System.Linq
Imports Telerik.Web.UI

Protected Sub RadGrid1_NeedDataSource(sender As Object, e As GridNeedDataSourceEventArgs)
    RadGrid1.DataSource = Enumerable.Range(1, 5).Select(Function(index) New With {
        .OrderID = index,
        .OrderDate = DateTime.Today.AddDays(-index),
        .Freight = index * 10.5D,
        .ShipName = "Name " & index,
        .ShipCountry = "Country " & index
    }).ToList()
End Sub

Furthermore, there is a mechanism for making any control integrated in the grid to perform AJAX callbacks instead of postbacks. For example, the drag-and-drop for grouping and column reordering uses that mechanism to facilitate no-postback experience.

The AJAX framework preserves the ASP.NET page lifecycle. You can continue to set properties on the grid and on controls inside the grid, including third-party controls. Keep the data-binding lifecycle in mind when you configure asynchronous updates, and ensure that the grid is recreated and bound as required on each request.

Ajaxify RadGrid

See Also