'ref' arguments
How can I define a method that takes an 'ref' argument? If you want to define a method that takes a reference argument (that is, and in/out argument) that C# programs can see defined as "ref", you can use the C++ reference (&) syntax.

However, if the type of the argument is one of the basic types, and you try to use the C++ name for the type, this won't compile at first. For example, this won't work:

void MethodWithRef(int& v);

The simplest workaround is to use the CLR's typename, instead:

void MethodWithRef(System::Int32& v);