WCF全称为Windows Communication Foundation，是Microsoft平台上的SOA架构，用于构建分布式和可交互操作的应用程序。它统一ASMX, .NET Remoting, 与Enterprise Services的开发模型，为各种应用提供单一的编程模型，基于配置驱动的协议选择，消息格式，进程分配等。
开发环境：Visual Studio 2010 + NET Framework 4.0。
本章我们通过一个简单的DEMO来创建一个WCF程序。
1、打开VS2010，选择C#语言下的创建WCF程序，选中WCF Service Library，修改解决方案名称为HelloWCF与项目名称为HelloServiceLibrary，点击确定。
2、删除HelloServiceLibrary项目中生成的IService1.cs与Services1.cs文件。
3、新建IHelloWCF接口文件，代码如下：
// OperationContract为服务契约
[ServiceContract]
public interface IHelloWCF
{
// OperationContract为方法契约
[OperationContract]
string GetMessage( string msg);
}
4、新建HelloWCF文件，代码如下：
public class HelloWCF : IHelloWCF
{
public string GetMessage( string msg)
{
return string .Format( " The server received message is : {0} " , msg);
}
}
5、修改HelloServiceLibrary中的App.config文件：
修改服务名称为：<service name="HelloServiceLibrary.HelloWCF">
修改端契约为：<endpoint address="" binding="wsHttpBinding" contract="HelloServiceLibrary.IHelloWCF">
修改服务地址为：<add baseAddress="http://localhost:8732/Design_Time_Addresses/HelloServiceLibrary/HelloWCF/" />
配置如下
<? xml version = " 1.0 " encoding = " utf-8 " ?>
< configuration >
< system.web >
< compilation debug = " true " />
</ system.web >
<!-- When deploying the service library project, the content of the config file must be added to the host ' s
app.config file. System.Configuration does not support config files for libraries. -->
< system.serviceModel >
< services >
< service name = " HelloServiceLibrary.HelloWCF " >
< endpoint address = "" binding = " wsHttpBinding " contract = " HelloServiceLibrary.IHelloWCF " >
< identity >
< dns value = " localhost " />
</ identity >
</ endpoint >
< endpoint address = " mex " binding = " mexHttpBinding " contract = " IMetadataExchange " />
< host >
< baseAddresses >
< add baseAddress = " http://localhost:8732/Design_Time_Addresses/HelloServiceLibrary/HelloWCF/ " />
</ baseAddresses >
</ host >
</ service >
</ services >
< behaviors >
< serviceBehaviors >
< behavior >
<!-- To avoid disclosing metadata information,
set the value below to false and remove the metadata endpoint above before deployment -->
< serviceMetadata httpGetEnabled = " True " />
<!-- To receive exception details in faults for debugging purposes,
set the value below to true . Set to false before deployment
to avoid disclosing exception information -->
< serviceDebug includeExceptionDetailInFaults = " False " />
</ behavior >
</ serviceBehaviors >
</ behaviors >
</ system.serviceModel >
</ configuration >
6、新建控制台应用程序Client，添加Service Reference，修改名称空间为HelloServiceLibrary。
7、在Program类中的Main函数中添加代码。
代码
static void Main( string [] args)
{
Console.WriteLine( " ------------------HelloWCFClient Begin------------------ " );
HelloServiceLibrary.HelloWCFClient client = new HelloServiceLibrary.HelloWCFClient();
Console.WriteLine( " The client sent message is ：Hello WCF " );
Console.WriteLine(client.GetMessage( " Hello WCF " ));
client.Close();
Console.WriteLine( " ------------------HelloWCFClient End------------------ " );
Console.ReadLine();
}
8、F5运行调试程序，在控制台上我们将看到客户端调用WCF服务端返回的结果。
------------------ HelloWCFClient Begin ------------------
The client sent message is ：Hello WCF
The server received message is : Hello WCF
------------------ HelloWCFClient End ------------------
至此，一个简单的WCF应用程序创建完成了，下章将详细介绍WCF的契约设计。
作者：心海巨澜
出处：http: // xinhaijulan.cnblogs.com
版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。