All I am really trying to do is create a textBox where non-contiguous segments of text can be highlighted at any given time.
From the experimenting I have done, it would appear that the System.Windows.Controls.RichTextBox is a good fit for this when customized slightly.
Extending RichTextBox and getting multiple pieces of text highlighted doesn't seem to be a problem (I think), but I am unable to actually get the custom wpf control in the application.
From what I have read, the Custom WPF control template is missing from the express edition, but I have read that other people have had success in making their own template... unfortunately they don't explain how they did it.
In other words, If all I am trying to do is extend RichtTextBox with a couple of extra features, how do I get VS to accept that custom control?