I am trying to do some WPF programming for the first time, and so I'm running through some tutorials. I am using Visual C# Express 2008. I am able to modify the application using the design view and the XAML view. I can also add events by double-clicking on the controls in the design view, and I can see these events being added to the C# code in the corresponding *.xaml.cs file.
However, I can't seem to actually add any statements to the events in this file, or otherwise edit this file in any way. Any time I press any key, I get the "Windows XP Ding.wav" default beep sound. I've tried looking around to see if the file is locked or read-only somehow, but I can't find anything. (And at this point, these files are not actually saved to disk, because for some reason VC# Express doesn't do so during project creation -- it holds off until the first time you save to ask you where you actually want to save it.)
The tutorials don't seem to mention anything about this. Has anyone else run into a similar problem?