分同步，异步和单向方法(即无返回值方法)

1.Servcie端测试代码

class MyRemoteObject: MarshalByRefObject, IMyRemoteObject{int myvalue;public MyRemoteObject() {Console.WriteLine("MyRemoteObject.Constructor: New Object created");}public void SetValue(int newval){Console.WriteLine("MyRemoteObject.setValue(): old {0} new {1}",myvalue,newval);// we simulate a long running action Console.WriteLine("     .setValue() -> waiting 5 sec before setting value");Thread.Sleep(5000);myvalue = newval;Console.WriteLine("     .setValue() -> value is now set");}public int GetValue(){Console.WriteLine("MyRemoteObject.getValue(): current {0}",myvalue);return myvalue;}public string GetName() {Console.WriteLine("MyRemoteObject.getName(): called");// we simulate a long running action Console.WriteLine("     .getName() -> waiting 5 sec before continuing");Thread.Sleep(5000);Console.WriteLine("     .getName() -> returning name");return "John Doe";}}class ServerStartup{static void Main(string[] args){Console.WriteLine ("ServerStartup.Main(): Server started");HttpChannel chnl = new HttpChannel(1234);ChannelServices.RegisterChannel(chnl);RemotingConfiguration.RegisterWellKnownServiceType(typeof(MyRemoteObject),"MyRemoteObject.soap", WellKnownObjectMode.Singleton);// the server will keep running until keypress.Console.ReadLine();}}

2.同步访问

即一般的访问方法

static void Main(string[] args){DateTime start = System.DateTime.Now;HttpChannel channel = new HttpChannel();ChannelServices.RegisterChannel(channel);IMyRemoteObject obj = (IMyRemoteObject) Activator.GetObject(typeof(IMyRemoteObject),"http://localhost:1234/MyRemoteObject.soap");Console.WriteLine("Client.Main(): Reference to rem.obj. acquired");Console.WriteLine("Client.Main(): Will set value to 42");try{obj.SetValue(42);Console.WriteLine("Client.Main(): Value successfully set.");}catch (Exception e){Console.WriteLine("Client.Main(): EXCEPTION.\n{0}", e.Message);}Console.WriteLine("Client.Main(): Will now read value");int tmp = obj.GetValue();Console.WriteLine("Client.Main(): New server side value {0}", tmp);Console.WriteLine("Client.Main(): Will call getName()");String name = obj.GetName();Console.WriteLine("Client.Main(): received name {0}",name);DateTime end = System.DateTime.Now;TimeSpan duration = end.Subtract(start);Console.WriteLine("Client.Main(): Execution took {0} seconds.",duration.Seconds);Console.ReadLine();}    

测试结果，共花了11秒的时间

3.异步访问

采用委托的BeginInvoke方法和EndInvoke方法

class Client{delegate void SetValueDelegate(int value);delegate String GetNameDelegate();static void Main(string[] args){DateTime start = System.DateTime.Now;HttpChannel channel = new HttpChannel();ChannelServices.RegisterChannel(channel);IMyRemoteObject obj = (IMyRemoteObject) Activator.GetObject(typeof(IMyRemoteObject),"http://localhost:1234/MyRemoteObject.soap");Console.WriteLine("Client.Main(): Reference to rem.obj. acquired");Console.WriteLine("Client.Main(): Will call setValue(42)");SetValueDelegate svDelegate = new SetValueDelegate(obj.SetValue);IAsyncResult svAsyncres = svDelegate.BeginInvoke(42,null,null);Console.WriteLine("Client.Main(): Invocation done");Console.WriteLine("Client.Main(): Will call getName()");GetNameDelegate gnDelegate = new GetNameDelegate(obj.GetName);IAsyncResult gnAsyncres = gnDelegate.BeginInvoke(null,null);Console.WriteLine("Client.Main(): Invocation done");Console.WriteLine("Client.Main(): EndInvoke for setValue()");svDelegate.EndInvoke(svAsyncres);Console.WriteLine("Client.Main(): EndInvoke for getName()");String name = gnDelegate.EndInvoke(gnAsyncres);Console.WriteLine("Client.Main(): received name {0}",name);Console.WriteLine("Client.Main(): Will now read value");int tmp = obj.GetValue();Console.WriteLine("Client.Main(): New server side value {0}", tmp);DateTime end = System.DateTime.Now;TimeSpan duration = end.Subtract(start);Console.WriteLine("Client.Main(): Execution took {0} seconds.",duration.Seconds);Console.ReadLine();}    }

测试结果
虽然增加了复杂度，但提高了程序相应速度

4.单向访问

当方法无返回值时,可用OneWayAttribute来标记,调用方法相同，同时支持同步与异步操作.

public interface IMyRemoteObject{// no more oneway attribute [OneWay()][OneWay()]void SetValue(int newval);int GetValue();String GetName();}