Is there way to speed up displaying a lot of text in a winforms textbox?

Question

Is there way to speed up displaying a lot of text in a winforms textbox? My application reads a file (which can be as large as 20MB) and then displays it to a textbox (TextB

Answer 1

Solution with minimal change in code will be to read the whole file contents into variable, then append "chunks" of the contents to the textbox in a loop calling Application.DoEvents() in each iteration.

You can show "Loading please wait..." message while it's still loading, the DoEvents call will ensure your application won't be "frozen" in the meanwhile.