I have just started to work out how to split my C♯ code into multiple files, and thought that I would share it with you. This post will be about what I believe to be static linking, but I could be wrong. Anyway, it is actually quite simple:

Here is the contents of filea.cs:

using System;

class ClassA
{
    public static void Main()
    {
        Console.WriteLine("This is a test from file A");
        Someplace.ClassB.PrintHello();
    }
}

and here is the contents of fileb.cs:

using System;

namespace Someplace
{
    class ClassB
    {
        public static void PrintHello()
        {
            Console.WriteLine("Another hello from file B!");
        }
    }
}

Then when you compile, you should do something like this:

csc filea.cs fileb.cs

This will tell the C Sharp compiler to grab both filea.cs and fileb.cs, and to output a single filea.exe.

Next I will try to figure out how to create a .dll file and include that - then I can build my own libraries.