Load system dll library

   


using System;
using System.Reflection;

class Class1 {
   static void Main(string[] args) {
      string windir = Environment.GetEnvironmentVariable("windir");
      Assembly ass = Assembly.LoadFrom(windir + @"Microsoft.NETFrameworkv1.1.4322System.Drawing.dll");
      foreach (Type type in ass.GetTypes()) {
         Console.WriteLine(type.ToString());
      }
   }
}