In MS Visual Studio Express 2013 for Windows Desktop:
I\'m learning C# and following an example that shows how to create a user interface in a .xaml file. https://ms
I ran through every solution in this post - apparently what I'd been missing is that I'd totally forgotten what the designer tab looked like.
When opening the XAML file, it always defaulted to code view no matter what (even after Repair), but sure enough, there was a small icon in the top right of the XAML code view that switched it to Design view.
sigh