or
protected void gvUser_ItemCommand(object sender, GridCommandEventArgs e){ if (e.CommandName == RadGrid.InitInsertCommandName) { e.Canceled = true;
... some code ... }}protected void gvUser_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e) { if (e.Item is GridCommandItem) { LinkButton addButton = e.Item.FindControl("InitInsertButton") as LinkButton; addButton.Attributes["onclick"] = "return ShowInsertForm();"; } }function ShowInsertForm() { window.radopen("Bearbeiten.aspx?umleitung=-1", "rwBearbeiten"); return false;}<telerik:RadWindowManager ID="rwmBearbeiten" runat="server" EnableShadow="true"> <Windows> <telerik:RadWindow ID="rwBearbeiten" runat="server" ShowContentDuringLoad="false" Width="800px" Height="650px" Title="Bearbeite Umleitungsdaten" Behaviors="Default" Modal="true" ReloadOnShow="true"> </telerik:RadWindow> </Windows></telerik:RadWindowManager>