Create a simple program in WCF

The main content of this section: 1. Basic Steps for creating a WCF model; 2. Download the code

To give you an intuitive impression on the WCF programming model, you can create a WCF application step by step using a simple program.

1. Basic Steps

1. Create a solution that contains two projects:

Y. wcffirst. HOST: a console application. As a server, you must add the system. servicemodel assembly.

Y. wcffirst. Client: console application. as a client, the system. servicemodel assembly is also required.

2. Y. wcffirst. Host create contract

The servicecontractattribute attribute class defines an interface as a service contract and acts on a method through the operationcontractattribute attribute class so that it can be called by the client. The Code is as follows:

View code

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 using System.ServiceModel;
 7 namespace y.WcfFirst.Host.Services
 8 {
 9     [ServiceContract]
10     public interface IHello
11     {
12         [OperationContract]
13         string Say(string name);
14     }
15 }

3. Y. wcffirst. Host implements the contract. The Code is as follows:

View code

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 using System.ServiceModel;
 7 namespace y.WcfFirst.Host.Services
 8 {
 9     [ServiceBehavior]
10     public class HelloService:IHello
11     {
12         [OperationBehavior]
13         public string Say(string name)
14         {
15             Console.WriteLine("Receive from Client:{0}", name);
16             return string.Format("Hello {0}!", name);
17         }
18     }
19 }

3. Run the following code to host the Y. wcffirst. Host Service:

View code

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 using System.ServiceModel;
 7 using y.WcfFirst.Host.Services;
 8 namespace y.WcfFirst.Host
 9 {
10     class Program
11     {
12         static void Main(string[] args)
13         {
14             Console.Title = "y.WcfFirst.Host";
15             ServiceHost host = new ServiceHost(typeof(HelloService));
16             host.Opened += delegate
17             {
18                 Console.WriteLine("\"HelloService\" is Running......\r\nPress any key to exit");
19             };
20             host.Open();
21             Console.ReadLine();
22         }
23     }
24 }

4. Configure the endpoint in Y. wcffirst. Host app. config

Address: service address

Binding: all details of communication, such as encoding, network transmission, and whether the body is encrypted.

Contract: available operations on the client.

The detailed configuration is as follows:

View code

 1 <?xml version="1.0" encoding="utf-8" ?>
 2 <configuration>
 3   <system.serviceModel>
 4     <services>
 5       <service name="y.WcfFirst.Host.Services.HelloService">
 6         <endpoint address="net.tcp://localhost:6666/hello"
 7                    binding="netTcpBinding"
 8                    contract="y.WcfFirst.Host.Services.IHello"></endpoint>
 9       </service>
10     </services>
11   </system.serviceModel>
12 </configuration>

5. Y. wcffirst. client proxy implementation:

View code

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 using System.ServiceModel;
 7 namespace y.WcfFirst.Client.Proxys
 8 {
 9     [ServiceContract]
10     public interface IHello
11     {
12         [OperationContract]
13         string Say(string name);
14     }
15 }

View code

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 using System.ServiceModel;
 7 using System.ServiceModel.Channels;
 8 namespace y.WcfFirst.Client.Proxys
 9 {
10     public class HelloProxy:ClientBase<IHello>,IHello
11     {
12         public HelloProxy()
13             : base()
14         {
15         }
16 
17         public string Say(string name)
18         {
19             return base.Channel.Say(name);
20         }
21     }
22 }

6. The configuration in Y. wcffirst. Client app. config is as follows:

View code

 1 <?xml version="1.0" encoding="utf-8" ?>
 2 <configuration>
 3   <system.serviceModel>
 4     <client>
 5       <endpoint name="wcfFirst"
 6                  address="net.tcp://localhost:6666/hello"
 7                  binding="netTcpBinding"
 8                  contract="y.WcfFirst.Client.Proxys.IHello"></endpoint>
 9     </client>
10   </system.serviceModel>
11 </configuration>

7. Y. wcffirst. cliet:

View code

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 
 6 using System.ServiceModel;
 7 using y.WcfFirst.Client.Proxys;
 8 namespace y.WcfFirst.Client
 9 {
10     class Program
11     {
12         static void Main(string[] args)
13         {
14             Console.Title = "y.WcfFirst.Client";
15             Console.WriteLine("Please input your name:");
16             string name = string.Empty;
17             while (true)
18             {
19                 name = Console.ReadLine();
20                 if (name.Equals("exit"))
21                 {
22                     Environment.Exit(0);
23                 }
24                 using (HelloProxy proxy = new HelloProxy())
25                 {
26                     Console.WriteLine("Recevie from Server:{0}", proxy.Say(name));
27                     proxy.Close();
28                 }
29             }
30         }
31     }
32 }

8. Run the "show" command. Run the server (host) first, then the client (client), and input "book" and "Glass" on the client. The result is as follows:

Ii. Download source code

You can download the source code from here.