How do I change the WPF Expander Header Text when expanded or collapsed?

Posted by Scott Ferguson on Stack Overflow See other posts from Stack Overflow or by Scott Ferguson
Published on 2010-04-09T00:01:00Z Indexed on 2010/04/09 0:03 UTC
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wpf

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expander

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.NET

Using a WPF expander, I want the Header to change from See More to See Less when the control is expanded, and back to See More when it's collapsed again. I'd prefer a WPF pure solution, rather than a C# or other code behind method. I get the feeling this should be easy, but I'm struggling for the right terms to get a solution via google.

Thanks!

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