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

My Xaml issue in the same location (no converters to be clear) was a different XDG0000 and it stemmed from a cut and paste of code from OneNote into the xaml.

For some reason the pasted text ended up with hidden characters(NBWS to be exact) wherever there were line breaks. By removing all linebreaks between controls and bringing the control attributes onto one line such as from:

to

Resolved the issues.

I present this here as an alternative to generic issues found in the .Resources section of a xaml page.