C# 是创新性的新式编程语言

				显式卸载应用程序域 AppDomain.Unload
				跨越应用程序边界、并通通引用的方式来进行封送处理的类型。
				
				
				
				using System;
				using System.Reflection;
				
				
				using System.Threading;
				
				class MarshalByRefType:MarshalByRefObject
				{
					public void SomeMethod(String sourceAppDomain)
					{
						Console.WriteLine("Code from the '{0}' AppDomain\n"+
							"called into the '{1}' AppDomain.",sourceAppDomain,Thread.GetDomain().FriendlyName);
					}
				}
				class App
				{
					/// 
					/// 应用程序的主入口点。
					/// 
					[STAThread]
					static void Main(string[] args)
					{
						//创建一个新应用程序域
						AppDomain ad=AppDomain.CreateDomain("MyNewAppDomain",null,null);
						//在新的程序域中创建对象
						MarshalByRefType mbrt=(MarshalByRefType)ad.CreateInstanceAndUnwrap(Assembly.GetCallingAssembly().FullName,"MarshalByRefType");
						//调用对象的方法
						mbrt.SomeMethod(Thread.GetDomain().FriendlyName);
						//卸载应有程序域及其内所有程序集
						AppDomain.Unload(ad);
						try
						{
							//试图再调用卸载对象的方法,有异常
							mbrt.SomeMethod(Thread.GetDomain().FriendlyName);
							Console.WriteLine("Called SomeMethod on object in other AppDomain.\nThis shouldn't happen.");
						}
						catch(AppDomainUnloadedException)
						{
							Console.WriteLine("Fail to Called SomeMethod on object in other AppDomain.\nThis should happen.");
						}
						Console.WriteLine();
					}
				}