Enabling Custom Key-Press Logic for an IsReadOnly WPF RichTextBox

gistfile1.cs

In your XAML:
-------------

<RichTextBox
  Name="MyRichTextBox"
  PreviewKeyDown="MyRichTextBox_PreviewKeyDown" />

In your C# Code-behind:
-----------------------

private void MyRichTextBox_PreviewKeyDown( object sender, KeyEventArgs e )
{
	if ( e.Key == Key.PageDown || e.Key == Key.End )
	{
		MyRichTextBox.ScrollToEnd();
	}
	else if ( e.Key == Key.PageUp || e.Key == Key.Home )
	{
		MyRichTextBox.ScrollToHome();
	}
}