public MarshalByValType MethodWithReturn()
{
Console.WriteLine("Executing in " + Thread.GetDomain().FriendlyName);
MarshalByValType t = new MarshalByValType();
Thread.Sleep(3000);
return(t);
}
static void Marshaling()
{
//获取当前线程所在的域
AppDomain adCallingThreadDomain = Thread.GetDomain();
string callingDomainName = adCallingThreadDomain.FriendlyName;
Console.WriteLine("Default AppDomain's FriendlyName = {0}", callingDomainName);
//获取Main方法所在的程序集
string exeAssembly = Assembly.GetEntryAssembly().FullName;
Console.WriteLine("Main assembly = {0}", exeAssembly);
AppDomain appDomain2 = null;
Console.WriteLine("{0} Demo #1", Environment.NewLine);
appDomain2 = AppDomain.CreateDomain("appDomain2", null, null);
MarshalByRefType marshalByRefType = null;
marshalByRefType = (MarshalByRefType)appDomain2.CreateInstanceAndUnwrap(exeAssembly, typeof(MarshalByRefType).ToString());
Console.WriteLine("Type = {0}", marshalByRefType.GetType());
Console.WriteLine("Is Proxy = {0}", RemotingServices.IsTransparentProxy(marshalByRefType));
//看起来像是MarshalByRefType上调用一个方法，实则不是
//这是在代理类型调用一个方法，代理使线程切换到拥有对象的AppDomain，并在真实的对象上调用这个方法
marshalByRefType.SomeMethod();
AppDomain.Unload(appDomain2);
//在卸载了域之后，试图调用方法，会抛出异常
try
{
marshalByRefType.SomeMethod();
Console.WriteLine("Call Success");
}
catch (AppDomainUnloadedException)
{
Console.WriteLine("Call Failed");
}
Console.WriteLine("{0} Demo #2", Environment.NewLine);
appDomain2 = AppDomain.CreateDomain("appDomain2", null, null);
marshalByRefType = (MarshalByRefType)appDomain2.CreateInstanceAndUnwrap(exeAssembly, typeof(MarshalByRefType).ToString());
MarshalByValType marshalByValType = marshalByRefType.MethodWithReturn();
Console.WriteLine("Is Proxy = {0}", RemotingServices.IsTransparentProxy(marshalByValType));
//在该域下的对象中调用方法
Console.WriteLine("Returned object created " + marshalByValType.ToString());
AppDomain.Unload(appDomain2);
try
{
Console.WriteLine("Returned object created " + marshalByValType.ToString());
Console.WriteLine("Call Success");
}
catch (AppDomainUnloadedException)
{
Console.WriteLine("Call Failed");
}
Console.WriteLine("{0} Demo #3", Environment.NewLine);
appDomain2 = AppDomain.CreateDomain("appDomain2", null, null);
marshalByRefType = (MarshalByRefType)appDomain2.CreateInstanceAndUnwrap(exeAssembly, typeof(MarshalByRefType).ToString());
NonMarshalableType nonMarshalableType = marshalByRefType.MethodArgAndReturn(callingDomainName);
Console.WriteLine("Is Proxy = {0}", RemotingServices.IsTransparentProxy(nonMarshalableType));
}
