Hi !!! I have problem with Refreshing or Redrawing my Window Form. I have one Rich Text Box on my Form and i have a list of title of books on it. I wish when I add a new title book to Rich Text Box to Refresh/Redraw the all Windows Form or just Refresh/Redraw Rich Text Box. I try to use "Refresh()" method and "Invalidate(true)" but nothing happen. Rich Text Box it's still the same state. But when i restart the program the title of new added book is added in the Rich Text Box but this no suits me. Can you help me ??? Sorry for my bad English !!!