Reported from MSDN forum thread http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/37a24bfa-6877-45f8-9a3b-43bf8f50ac8e "I've just installed VS2012 and noticed that the Properties Editor in the WPF Designer behaves a bit differently to the VS2010 version. One thing I was curious about is that I can't enter text into the CommandParameter field for a button control. I was able to do this in VS2010. If I add the CommandParameter tag into the Xaml (e.g. CommandParameter = "ABCD") then I am able update this text in the CommandParameter field of the Properties Editor. Not sure if this is working as designed or whether it's a bug."
Visual Studio/Team Foundation Server/.NET Framework Tooling Version
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Operating System Language