helloworld:一个完整的WCF案例

服务端

1.创建一个空的解决方案:WCFDemo:

2.创建一个宿主控制台程序：Host

3.右击Host项目，选择“添加”--“新建项”，选择“WCF服务”创建名为“Service1.cs”的服务

如此：VS2010已经为我们创建了 IService1.cs   Service1.cs   app.config  三个文件，其中IService1.cs和Service1.cs 创建了同属于Host命名空间的类，我们可以修改这三个文件：

IService1.cs ：

using System.ServiceModel;

namespace Host
{
    // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的接口名“IService1”。
    [ServiceContract]
    public interface IService1
    {
        [OperationContract]
        string DoWork(int value);
    }
}

Service1.cs：

using System.ServiceModel;

namespace Host
{
    // 注意: 使用“重构”菜单上的“重命名”命令，可以同时更改代码和配置文件中的类名“Service1”。
    public class Service1 : IService1
    {
        public string  DoWork(int value)
        {
            int iPingfang = value * value;
            return string.Format("经过平方后的值为：{0}",iPingfang );
        }
    }
}

App.config：

文件原则上可以不用改，但是address太长了（默认的为baseAddress="http://localhost:8732/Design_Time_Addresses/Host/Service1/"）缩短为baseAddress=“http://localhost:8732/Service1/”

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <behaviors>
            <serviceBehaviors>
                <behavior name="">
                    <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="false" />
                </behavior>
            </serviceBehaviors>
        </behaviors>
        <services>
            <service name="Host.Service1">
                <endpoint address="" binding="wsHttpBinding" contract="Host.IService1">
                    <identity>
                        <dns value="localhost" />
                    </identity>
                </endpoint>
                <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
                <host>
                    <baseAddresses>
                        <add baseAddress="http://localhost:8732/Service1/" />
                    </baseAddresses>
                </host>
            </service>
        </services>
    </system.serviceModel>
</configuration>

4.此外WCF服务必须在宿主进程中运行，我们可以修改 Program.cs 文件，创建宿主进程：

using System.ServiceModel;

namespace Host
{
    class Program
    {
        static void Main(string[] args)
        {
            using (ServiceHost host = new ServiceHost(typeof(Host.Service1)))
            {
                host.Open();
                Console.WriteLine("服务已经启动......");
                Console.ReadLine();
                host.Close();
            }
        }
    }
}

5.编译运行程序，生成Host.exe文件

---

 客户端

1.启动刚创建的WCF服务宿主进程Host.exe

2.创建一个客户端控制台程序:Client

3.右击“引用”--“添加服务引用”，在“地址”的TextBox里面输入服务器的地址（就是咱们前面设置的baseaddress地址），并点击“前往”将得到目标服务器上面的Services，如下图所示：

如此,这一步将在客户端间接借助SvcUtil.exe文件创建客户端代理（命名空间为：using Client.ServiceReference1;）以及配置文件app.config,具体如下：

app.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_IService1" closeTimeout="00:01:00"
                    openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                    bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
                    maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                    messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
                    allowCookies="false">
                    <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
                        maxBytesPerRead="4096" maxNameTableCharCount="16384" />
                    <reliableSession ordered="true" inactivityTimeout="00:10:00"
                        enabled="false" />
                    <security mode="Message">
                        <transport clientCredentialType="Windows" proxyCredentialType="None"
                            realm="" />
                        <message clientCredentialType="Windows" negotiateServiceCredential="true"
                            algorithmSuite="Default" />
                    </security>
                </binding>
            </wsHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://localhost:8732/Service1/" binding="wsHttpBinding"
                bindingConfiguration="WSHttpBinding_IService1" contract="ServiceReference1.IService1"
                name="WSHttpBinding_IService1">
                <identity>
                    <dns value="localhost" />
                </identity>
            </endpoint>
        </client>
    </system.serviceModel>
</configuration>

4.修改客户端程序 Program.cs ，并使用代理访问服务契约：

using System.ServiceModel;
using Client.ServiceReference1;//引用命名空间

namespace Client
{
    class Program
    {
        static void Main(string[] args)
        {
            ServiceReference1.Service1Client proxy = new Service1Client();
            string str = proxy.DoWork(2);//运行服务端方法
            Console.WriteLine(str);
            Console.ReadLine();
        }
    }
}

5.编译运行程序，生成 Client.exe