DevExpress: 给ASPxGridView 加右键菜单 ASPxPopupMenu

<%@ Register assembly="DevExpress.Web.v10.1, Version=10.1.5.0, Culture=neutral, PublicKeyToken=41f74a48e1b65e16" namespace="DevExpress.Web.ASPxMenu" tagprefix="dx" %> <dx:ASPxPopupMenu ID="menuUserGroup" runat="server" ClientIDMode="AutoID" onitemclick="menuUserGroup_ItemClick" PopupElementID="grvUserGroup"> <Items> <dx:MenuItem Name="mnuAddRow" Text="增加行"> <Image Url="~/Admin/Images/MenuImg/add.png"> </Image> </dx:MenuItem> <dx:MenuItem Name="mnuDeleteRow" Text="删除行"> <Image Url="~/Admin/Images/MenuImg/delete.png"> </Image> </dx:MenuItem> <dx:MenuItem Name="mnuEditRow" Text="编辑行"> <Image Url="~/Admin/Images/MenuImg/open.gif"> </Image> </dx:MenuItem> </Items> </dx:ASPxPopupMenu>