Beginning the journey of WCF, and look forward to future.

Recently, I have learned something about WCF techniques, and of course, I found it was excellent that I decided to learn deeper about it.

I hope someone interest it can communicate with me, or just post your idea or advices freely. The below is a sample of my testing of WCF for beginner( before go on, your need to learning the ABC concepts of WCF, the ABC is Address, Binding, Contract. The three factors needed by any Endpoint).

this sample is written without using config file, in order to simplify the demo and more easy to understand.

Contract --  Host -- Cilent

the contract is the basic thing to communicate within Host and Cilent.

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.ServiceModel;

namespace  SayHello
{
    [ServiceContract]
     public   interface  ISay
    {
        [OperationContract]
         string  SayHello( string  yourName);
    }
     public   class  Say:ISay
    {
         #region  ISay Members

         public   string  SayHello( string  yourName)
        {
             return   string .Format( " Hello, {0}. Now is {1}. " , yourName, DateTime.Now);
        }

         #endregion
    }
}

and then, you can construct your host now.

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.ServiceModel;
using  SayHello;

namespace  HostConsole
{
     class  Program
    {
         static   void  Main( string [] args)
        {
            Console.WriteLine( " Welcome to WCF " );
             using  (ServiceHost host  =   new  ServiceHost( typeof (Say),  new  Uri( " net.tcp://localhost:8000/ " )))
            {
                host.AddServiceEndpoint( typeof (ISay),  new  NetTcpBinding(),  " SayHello " );
                host.Open();
                Console.ReadLine();
            }
        }
    }
}

Please note that I'm using Tcp binding. The next is the Client.

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.ServiceModel;
using  SayHello;

namespace  ClientConsole
{
     class  Program
    {
         static   void  Main( string [] args)
        {
            Console.WriteLine( " Please input your name " );
             string  yourName  =  Console.ReadLine();
            ChannelFactory < ISay >  cf  =   new  ChannelFactory < ISay > ( new  NetTcpBinding(),  new  EndpointAddress( " net.tcp://localhost:8000/SayHello " ));
            ISay say  =  cf.CreateChannel();
            Console.WriteLine(say.SayHello(yourName));
            Console.ReadLine();
        }
    }
}

the Client uses the ChannelFactory to create an Endpoint and connect to Host. The metadate is ISay an interface defined by me.

and the next chapter, I will use config file to config WCF instead of custom programming.

the Contract is the same, and the Host has a little changes.

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.ServiceModel;
using  SayHello;

namespace  HostConsole
{
     class  Program
    {
         static   void  Main( string [] args)
        {
            Console.WriteLine( " Welcome to WCF " );
             using  (ServiceHost host  =   new  ServiceHost( typeof (Say)))
            {
                host.Open();
                Console.ReadLine();
            }
        }
    }
}

Please notice that hte host is using type of Say. You need add a new App.config file like,

<? xml version="1.0" encoding="utf-8"  ?>
< configuration >
     < system.serviceModel >
         < services >
             < service  name ="SayHello.Say"  behaviorConfiguration ="MEXGET" >
                 < host >
                     < baseAddresses >
                         < add  baseAddress  ="http://localhost:8000/" />
                     </ baseAddresses >
                 </ host >
                 < endpoint  address ="SayHello"  binding ="basicHttpBinding"  contract ="SayHello.ISay" ></ endpoint >
                 < endpoint  address  ="mex"  binding ="mexHttpBinding"  contract ="IMetadataExchange" ></ endpoint >
             </ service >
         </ services >
         < behaviors >
             < serviceBehaviors >
                 < behavior  name ="MEXGET" >
                     < serviceMetadata  httpGetEnabled ="true" />
                 </ behavior >
             </ serviceBehaviors >
         </ behaviors >
     </ system.serviceModel >
</ configuration >

In this config file, notice the service's name is [Namesapce].[ClassName] format, and it has a behavior which will enabled the httpGet for the client to get metadata, the "mex" is the Endpoint specified for geting metadata.

the Client is more easy to write, but need to add web reference using the URI mentioned above http://localhost:8000/.

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Text;
using  System.ServiceModel;
using  SayHello;

namespace  ClientConsole
{
     class  Program
    {
         static   void  Main( string [] args)
        {
            Console.WriteLine( " Please input your name " );
             string  yourName  =  Console.ReadLine();

             // ChannelFactory<ISay> cf = new ChannelFactory<ISay>(new BasicHttpBinding(), new EndpointAddress(" http://localhost :8000/SayHello1"));
             // ISay say = cf.CreateChannel();

            SaySR.SayClient say  =   new  ClientConsole.SaySR.SayClient();
            
            
            Console.WriteLine(say.SayHello(yourName));
            Console.ReadLine();
        }
    }
}

转载于:https://www.cnblogs.com/jerryhong/archive/2009/08/14/1545863.html