How to find the files that are?

Question

visual studio

Probably a stupid question, but thanks to microsoft for a wonderful IDE.
I added a new class to the solution tab, opened the visibility of Folder VIew, moved it to where it should be, now it gives an error that the file does not exist. Tried clean solution + rebuild. It did not help, then I went in and manually configured test.vcxproj.filters by specifying the correct paths, anyway, there is no file when there is like a shreddinger's cat.
If I understand correctly, the only option for the curve is to create files only through CTRL + C / CTRL + V and then manually drag them into VS, which is all incredibly time-consuming and convenient - 10,000,000.

Answer 1

uh.... I read it twice... if it's just as confusing to command the studio, it will also get confused)
Can you point it out again?
p/s/ in general I use a bunch of different methods and inserting and copying and creating - there are no problems
p/p/s a couple of times though people stomped on a rake with search and "doubling" common_file whose first letter was Russian)