findControl

This method takes control id for an argument and returns the corresponding client object of RadControl or ASP.NET AJAX control inside the grid row. Useful to reference client objects of controls inside a grid item cell on the client.

findControl(id)
id	String	The id of a RadControl or other ASP.NET AJAX control.

Example:

<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server">
    <MasterTableView> 
        <Columns> 
            <telerik:GridTemplateColumn> 
                <ItemTemplate> 
                    <telerik:RadTextBox RenderMode="Lightweight" ID="RadTextBox1" runat="server" /> 
                </ItemTemplate> 
            </telerik:GridTemplateColumn> 
        </Columns> 
    </MasterTableView>
    <ClientSettings>
        <ClientEvents OnRowDataBound="RadGrid1_RowDataBound" />
    </ClientSettings>
</telerik:RadGrid>

function RadGrid1_RowDataBound(sender, args) {
    var radTextBox1 = args.get_item().findControl("RadTextBox1");
    radTextBox1.set_value(args.get_dataItem()["TitleOfCourtesy"]);
}