title: Data bound radio button list in WPF
body: <p>I have a list of options in a data object, and I want to make the equivalent of a radio button list to allow the user to select one and only one of them.  Functionality similar to a databound combo box, but in radio button format.</p>
  
  <p>Silly me, I thought this would be built in, but no.  How do you do it?</p>