WPF XAML designer showing bound property names instead of property values

Question

One of my XAML files shows a strange behaviour in the XAML designer (but not during runtime):

public class MyDesignTimeViewModel
{

    public MyDesignTimeVi         


        

Answer 1

Turns out the missing thing was the IsDesignTimeCreatable attribute:

d:DataContext="{d:DesignInstance vm:MyDesignTimeViewModel, IsDesignTimeCreatable=true}"

With that attribute, everything works as expected.