So in some cases, like when building WPF windows/user-controls and what not certain file types like .xaml and .cs get combined into "one" file (the .cs file is placed underneath the .xaml).
The problem is that I know this guy that accidentally unbound the two files from each other, and I'm wondering if there is a way to help him put them back together again (or if there is a way to join files like this in general).