Button of Usercontrol to call a "sub" of the SWAddin.vb? fail ....=.=!

Dear Friends,

I learn from the video from youtube, "SolidWorks API Tutorial 3 of 5- Creating Task Pane Controls" by Javelin, that we could create a userControl to be TaskPane of SW,

However, when I use the button of the usercontrol to call a "sub" in the SWAddin.vb, then it fail.and below err information come out.

"See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.NotImplementedException: The method or operation is not implemented.
   at CustomSWAddin.usercontrol1.GetInMacro()
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)"

I am not familar with VB.NET programing, pls help to advise. and many many thanks.

regards

Vincent

SolidworksApi macros