How do you prevent a RichTextBox from refreshing its display?

Question

I have a RichTextBox where I need to update the Text property frequently, but when I do so the RichTextBox \"blinks\" annoyingly as it refreshes all throughout a method call

Answer 1

Found here: http://bytes.com/forum/thread276845.html

I ended up sending a WM_SETREDRAW via SendMessage to disable then reenable followed by an Invalidate() after I finished updating. That seemed to work.

I've never tried this method. I have written an application with a RTB that has syntax highlighting and used the following in the RTB class:

protected override void WndProc(ref Message m)
{
    if (m.Msg == paint)
    {
        if (!highlighting)
        {
            base.WndProc(ref m); // if we decided to paint this control, just call the RichTextBox WndProc
        }
        else
        {
            m.Result = IntPtr.Zero; // not painting, must set this to IntPtr.Zero if not painting otherwise serious problems.
        }
    }
    else
    {
        base.WndProc(ref m); // message other than paint, just do what you normally do.
    }
}

Hope this helps.