I have a listbox in dialog box. I list some selected hatch handle in this listbox. When I click on any hatch item in the listbox, I put code to change the color of hatch. The color does not get changed until I move the dialog a little. In VBA, I use Hatch.Update to fresh screen. but I can not find the method in .NET. How I can do it?
I also tried to refresh screen by
Viewport v = new Viewport();
but how I can create a acitve Viewport?