public MarshalByValType MethodWithReturn()
{
Console.WriteLine("Executing in " + Thread.GetDomain().FriendlyName);
MarshalByValType t = new MarshalByValType();
return(t);
}
private static void Marshling()
{
//获取AppDomain引用
AppDomain adCallingThreadDomain = Thread.GetDomain();
string callingDomainName = adCallingThreadDomain.FriendlyName;
Console.WriteLine("Default AppDomain's friendly name={0}", callingDomainName);
//获取并显示我们的AppDomain中包含的“Main”方法的程序集
string exeAssembly = Assembly.GetEntryAssembly().FullName;
Console.WriteLine("Main assembly={0}", exeAssembly);
//***DEMO 1：使用按引用封送进行跨AppDomain通信***
Console.WriteLine("{0} Demo #1", Environment.NewLine);
//定义局部变量来引用一个AppDomain
AppDomain ad2 = AppDomain.CreateDomain("AD #2", null, null);
//将我们的程序集加载到新AppDomain中，构造一个对象，把它封送回我们的AppDomain（实际得到的是一个代理的引用）
MarshalByRefType mbrt = (MarshalByRefType)ad2.CreateInstanceAndUnwrap(exeAssembly, "ConsoleAppDomains.MarshalByRefType");
Console.WriteLine("Type={0}", mbrt.GetType());
//证明得到的是一个代理对象的引用
Console.WriteLine("Is proxy={0}", RemotingServices.IsTransparentProxy(mbrt));
//代理类型上调用一个方法，代理使线程切换到拥有对象的那个AppDomain，并在真实的对象上调用这个方法。
mbrt.SomeMethod();
//卸载新的AppDomain
AppDomain.Unload(ad2);
try
{
//在代理上调用一个方法。AppDomain无效，造成抛出异常
mbrt.SomeMethod();
Console.WriteLine("Successful call.");
}
catch (AppDomainUnloadedException)
{
Console.WriteLine("Failed call.");
}
//***DEMO 2：使用Marshal-by-Value进行跨AppDomain通信***
Console.WriteLine("{0} Demo #2", Environment.NewLine);
//新建一个AppDomain
ad2 = AppDomain.CreateDomain("AD #2", null, null);
mbrt = (MarshalByRefType)ad2.CreateInstanceAndUnwrap(exeAssembly, "ConsoleAppDomains.MarshalByRefType");
MarshalByValType mbvt = mbrt.MethodWithReturn();
Console.WriteLine("Is proxy={0}", RemotingServices.IsTransparentProxy(mbvt));
Console.WriteLine("Returned object created " + mbvt.ToString());
AppDomain.Unload(ad2);
try
{
Console.WriteLine("Returned object created " + mbvt.ToString());
Console.WriteLine("Success call.");
}
catch (AppDomainUnloadedException)
{
Console.WriteLine("Failed call.");
}
//***DEMO 3:使用不可封送的类型进行跨AppDomain通信**
Console.WriteLine("{0} Demo #3", Environment.NewLine);
//新建一个AppDomain
ad2 = AppDomain.CreateDomain("AD #2", null, null);
mbrt = (MarshalByRefType)ad2.CreateInstanceAndUnwrap(exeAssembly, "ConsoleAppDomains.MarshalByRefType");
NoMarshalableType nmt = mbrt.MethodArgAndReturn(callingDomainName);
}