How to open a new class not in solution explorer?

Question

C++ / C#

I apologize in advance for such a stupid question :(
I ran into a problem when I try to open a class in the solution explorer, it opens in it, and not in the main program window.
On the screen, the Walls class opened in the solutin explorer tab.
Help, like I
know that the class can be dragged into the main field anyway, but how to make it happen automatically.

Answer 1

This is not a file opened in SE, but SE and the file are in the same block.
I haven’t been in the studio for a long time, but it seems that Solution Explorer can somehow be fixed separately