顯式卸載應用程序域 AppDomain.Unload
跨越應用程序邊界、并通通引用的方式來進行封送處理的類型。



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
{
	/// <summary>
	/// 應用程序的主入口點。
	/// </summary>
	[STAThread]
	static void Main(string[] args)
	{
		//創建一個新應用程序域
		AppDomain ad=AppDomain.CreateDomain("MyNewAppDomain",null,null);
		//在新的程序域中創建對象
		MarshalByRefType mbrt=(MarshalByRefType)ad.CreateInstanceAndUnwrap(Assembly.GetCallingAssembly().FullName,"MarshalByRefType");
		//調用對象的方法
		mbrt.SomeMethod(Thread.GetDomain().FriendlyName);
		//卸載應有程序域及其內所有程序集
		AppDomain.Unload(ad);
		try
		{
			//試圖再調用卸載對象的方法,有異常
			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();
	}
}