How do you prevent a rich text box from automatic scrolling, when performing syntax highlighting?

Question

• Language = C#
• .NET version = 3.5

When my code performs syntax highlighting the text appears, to the user, to be scrolling automatically. This becomes a severe problem when there is several hundred lines of text in the rich text box. So, how can I programmatically modify the text's color without causing the user to see anything other than the color change?

Thanks for any and all assistance.

Answer 1

Have you tried something like this:

Save selstart position. 
Disable updates to the text box.  
Apply syntax highlighting.
Set selstart to saved value.  
Enable updates.