When I try to build a project I have this mistake:
The name 'F7Utils' does not exist in the current context
I’ve got this mistake whenever I try to build my WPF project. F7Utils, as its name says, is a private library that I created by myself. And I refer it in my project. So, as it’s referred, I don’t understand what’s happening…
This is my structure:

And this how I call it:
String a = F7Utils.Nullable.NullValue.String;
And then it launches the error.
Any suggestion?
That error can occur if your library doesn’t use
F7Utilsas the namespace for theNullabletype. This can also happen if your types are notpublicwithin your library.On a side note, I would recommend not using the same type names as framework types, such as
Nullable, as this will just cause your code to be less maintainable.