❔ How does C#'s inclusion system work?

probably terrible title (again). basically what i'm asking is how does C# know which files to take and compile?
in C++ this is done by the whole

#include

#include

system, but C# has .csproj and that kinda stuff
so does C# just take all the

.cs

.cs

files in the current directory? or does it expand its search until it finds a

.csproj

.csproj

❔ How does C#'s inclusion system work? - C#