Detecting hyperlinks in WPF RichTextBox

Hey folks, I'm wanting to write some rudimentary support for detecting hyperlinks in a WPF RichTextBox control. My plan is to use a regex to identify any links and then manually replace them with real hyperlink objects.

However the part I am having trouble with is getting the correct t开发者_运维知识库extpointers, etc. once I find a link. For example, I can flatten the entire document to a text string and find links, but once I do that how can I get the proper pointer to the block that needs url-ifying?

Perhaps a better approach would be to iterate over blocks in the document, assuming a url would not span multiple blocks, however even then I have very little experience working with the RichTextBox/FlowDocument object model so any pointers (pun intended) would be helpful. Thanks!

I think you might find this useful:

http://blogs.msdn.com/b/prajakta/archive/2006/10/17/autp-detecting-hyperlinks-in-richtextbox-part-i.aspx