//ServiceContract 属性以及 Indigo 使用的所有其他属性均在 System.ServiceModel 命名空间中定义， 
//因此本例开头使用 using 语句来引用该命名空间。 
namespace WCFService 
{ 
         //1.服务契约 
        [ServiceContract(Namespace =  "http://www.cnblogs.com/frank_xl/")] 
        public interface IWCFService 
        { 
                //操作契约 
                [OperationContract] 
                string SayHello(string name); 
                //操作契约 
                [OperationContract] 
                string SayHelloToUser(User user); 
 
        } 
        //2.服务类，集成接口。实现契约 
        public class WCFService : IWCFService 
        { 
                //实现接口定义的方法 
                public string SayHello(string name) 
                { 
                        Console.WriteLine("Hello! {0},Using string ", name); 
                        return "Hello! " + name; 
                } 
                //实现接口定义的方法 
                public string SayHelloToUser(User user) 
                { 
                        Console.WriteLine("Hello! {0}        {1},Using DataContract ", user.FirstName, user.LastName); 
                        return "Hello! " + user.FirstName + " " + user.LastName; 
                } 
        } 
        //3.数据契约//序列化为XML，作为元数据封装到服务里 
        [DataContract] 
        public struct User 
        { 
                [DataMember] 
                public string FirstName; 
                [DataMember] 
                public string LastName; 
        } 
}

//采用自托管方式，也可以是IIS、WAS,Windows服务等用户自定义程序托管服务 
      public  class WCFHost 
        { 
                 static  void Main( string[] args) 
                { 
 
                         //反射方式创建服务实例， 
                         //Using方式生命实例，可以在对象生命周期结束时候，释放非托管资源 
                         using (ServiceHost host =  new ServiceHost( typeof(WCFService.WCFService))) 
                        { 
                                 //相同的服务注册多个基地址 
                                 //添加服务和URI，用户资源标识符 
                                 //Uri tcpAddress = new Uri("http://localhost:8001/WCFService"); 
                                Uri httpAddress =  new Uri( "http://localhost:8002/WCFService"); 
                                //Uri httpAddressLisening = new Uri("http://localhost:8002/WCFService"); 
                                //host.AddServiceEndpoint(typeof(WCFService.IWCFService), new WSHttpBinding(), tcpAddress); 
                                host.AddServiceEndpoint(typeof(WCFService.IWCFService), new WSHttpBinding(), httpAddress); 
                                //判断是否以及打开连接，如果尚未打开，就打开侦听端口 
                                //if (host.State !=CommunicationState.Opening) 
                                host.Open(); 
                                //显示运行状态 
                                Console.WriteLine("Host is runing! and state is {0}",host.State); 
                                //等待输入即停止服务 
                                Console.Read(); 
                        } 
                } 
        }

 本文转自 frankxulei 51CTO博客，原文链接：http://blog.51cto.com/frankxulei/320400，如需转载请自行联系原作者