How can I make C # code call a variable that is in a C ++ file for example. Knowing I'm using Visual Studio.
C ++ code:
#include "stdafx.h"
#include <iostream>
int main()
{
int test = 10;
return 0;
}
but how can I access this variable in C #
You need to do interop. Basically you will generate a dll in c ++ exposing an interface to be consumed in C #. In the c # application tu will import this dll and then call the native code inside the managed code. On MSDN you have a great series talking about using Pinvoke.
Keywords for search: Pinvoke, Interop, dllimporter
Since it is a single variable, keep the C ++ variable saved in an XML and when you want to get it in C #, just read the xml. This idea of the interface through the .dll file is interesting to use in a very heavy application.