Dll Reference

[TestDll.cs]

public class TestDll
{
    public static void Func1()
    {
        System.Console.WriteLine("print from dll");
    }
}

csc /t:library TestDll.cs

[UseDll.cs]

using System;
using System.Diagnostics;
using System.Reflection;

class UseDll
{
    static void Main(string[] args)
    {
        TestDll.Func1();
    }
}

csc UseDll.cs /r:TestDll.dll