Form and designer files not linking in Solution Explorer

Question

I can\'t seem to get the form and the designer files to link in my project. They look like this in the Solution Explorer.

Answer 1

In VS2017 (c#) to solve it, in my case:

1. exclude all file
2. go to folder
3. rename file (all 3 file .cs.Designer.cs .resx)
4. refresh solution
5. add to project back