Hi,
I am not so sure because I refer to some VB sample.
I tried your way, but not work.
Currently, I solved it by implement IMyChildForm Interface to my class.
Anyway, I still hope to know the answer.
Thank you
I am not the most powerful man in this world.
I am not the worst man in this world either.
I just as same as all of you.
I still need to learn from my mistakes...
