WPF designer issues : XDG0008 The name “NumericTextBoxConvertor” does not exist in the namespace “clr-namespace:PulserTester.Convertors”

Question

I have an error that not let me see my designer.. but I have no error on a build and my program runs fine with no problem

I have tried to:

• Clean and Rebuil

Answer 1

You can switch to another framework version then switch back to your version, in my case I'm using VS 16.4. I changed from framework 4.6.2 to 4.7.2 then switch back to 4.6.2.

This simple action solve XDG0008 and XDG0012 in my project.