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From: dtolton (Doug)
Subject: RichText Box how to control the focus
Date: Fri, 07 Jun 2002 19:12:55 GMT
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I am writing the contents of StringBuilder object to a RichTextBox.
Basically I have a TextWriterTraceListener writing to a StringWriter
which writes to an underlying String Builder.
// Snippet
m_sbTrace = new StringBuilder();
StringWriter sw = new StringWriter(m_sbTrace);
TextWriterTraceListener tw = new TextWriterTraceListener(sw);
Trace.Listeners.Add(tw);
I have another form that references the string builder object and
loops, updating the RichTextBox in a background thread:
// Snippet
while (frmMain.AppStatus == MainForm.RxApplicationStatus.RUNNING)
{
Thread.Sleep(2000);
rtfHistory.Text = sb.ToString();
}
The problem that I'm encountering is everytime the loop updates it
resets the ViewPort for the RichTextBox. Is there a way to manually
position the ViewPort for the box? Say for instance someone was
looking at some text somewhere in the middle of the output, can I
reposition the ViewPort to that point? Or to the very end of the
output?
If there is a better way to write the trace output in a friendly
viewable fashion I'mto that as well.
Doug
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