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 am not sure if I should post the answer here because it may not apply for VS Express 2013.
I have exactly the same problem using Visual Studio 2015 Community Edition. It turns out my project Target version is higher.
Try the following:
Let me know if it is not relevant and I will delete my answer.
Cheers, Sam