1、新建一个WCF Service Library项目，名字叫做WCFServiceLibrary1，代码就用默认的，以下是它的两个方法：
      public string MyOperation1(string myValue)
      public string MyOperation2(DataContract1 dataContractValue)

2、在WCFServiceLibrary1项目下新建一个类文件，名字叫做MyCustomValidator.cs，编写如下代码：
      using System;
      using System.Collections.Generic;
      using System.Text;
      using System.IdentityModel.Selectors;
      using System.IdentityModel.Tokens;

      namespace WCFServiceLibrary1{
      public class MyCustomValidator:UserNamePasswordValidator{
          public override void Validate(string userName, string password)
          {
            if (!string.IsNullOrEmpty(userName) && !string.IsNullOrEmpty(password))
                if (userName != "123456" || password != "123456")
                    throw new Exception("用户名和密码错误");
                else
                    throw new Exception("用户名和密码不能为空");
          }
       }    //为了节约地方，就这么堆起了

3、新建一个WCFService项目，名字是WCFService1，引用前面已经编译好的WCFServiceLibrary1.dll，打开Service.svc
      写入以下代码：
      <% @ServiceHost Language=C# Debug="true" Service="WCFServiceLibrary1.service1" CodeBehind="" %>
      
        使用Makecert 工具创建一个证书，命令如下：
        Makecert -r -pe -n "CN=MyServer" -ss My -sky exchange

4、Web.Config做如下配置，并运行WCFService项目：
      <system.serviceModel>
    <services>
      <service behaviorConfiguration="MyBehavior" name="WCFServiceLibrary1.service1">
        <endpoint address="" binding="wsHttpBinding" bindingConfiguration="myBinding"
          contract="WCFServiceLibrary1.IService1" />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="MyBehavior">
          <serviceCredentials>
            <serviceCertificate findValue="MyServer" storeName="My" x509FindType="FindBySubjectName" />
            <userNameAuthentication userNamePasswordValidationMode="Custom"
              customUserNamePasswordValidatorType="WCFServiceLibrary1.MyCustomValidator,WCFServiceLibrary1" />
          </serviceCredentials>
          <serviceDebug httpsHelpPageEnabled="false" />
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="false" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <bindings>
      <wsHttpBinding>
        <binding name="myBinding">
          <security>
            <message clientCredentialType="UserName" />
          </security>
        </binding>
      </wsHttpBinding>
    </bindings>
  </system.serviceModel>

6、使用svcutil.exe 工具生成客户端配置文件和代理类，使用方法：
       svcutil.exe http://localhost:4207/WCFService1/Service.svc?wsdl

7、新建一个Windows程序，叫做WindowsApplication1，首先添加如下引用：
      System.ServiceModel
      System.Runtime.Serialization

8、将前面生成的配置文件中的节点Copy到App.Config中，将代理类复制到WindowsApplication1下，在窗体上增加一个按钮，并写入下面的代码：
      private void button1_Click(object sender, EventArgs e)
        {
            Service1Client client = new Service1Client();
            client.ClientCredentials.UserName.UserName = "123456";
            client.ClientCredentials.UserName.Password = "123456";
            MessageBox.Show(client.MyOperation1("www.xt80.com"));
        }
       运行WindowsApplication1，将会看到返回信息：Hello:www.xt80.com