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
In VS2017 v15.8.9 I found the designer wasn't displaying e.g. when right clicking in a xaml view's code pane and selecting View Designer.
Performing the following resolved it for me: I went into Tools > Options > XAML Designer and the Enable XAML Designer option was ticked. So, I unticked it, clicked Ok on the Options dialog to close it.
I exited and restarted Visual Studio and again went into Tools > Options > XAML Designer, ticked the Enable XAML Designer, clicked Ok, restarted Visual Studio, and it's now working.