通过DTE在VS Extension中添加菜单项不会触发点击处理程序

        DTE2 dte = GetService(typeof (DTE)) as DTE2;

        CommandBars cmdBars = dte.CommandBars as CommandBars;

        CommandBar owner = cmdBars[\"MyMenuName\"];

        CommandBarControl ctl1 = owner.Controls.Add(
            MsoControlType.msoControlButton, 1, string.Empty, 1, true);
        ctl1.Caption = \"caption\";
        ctl1.Enabled = true;

        //register on the Click event of the
        //button menu item
        CommandBarEvents buttonMenuItemHandler = (CommandBarEvents)dte.DTE.Events.CommandBarEvents[ctl1];

        buttonMenuItemHandler.Click += buttonMenuItemHandler_Click;