调用WCF不需要添加服务引用，使用一个WCFHelper类就可以

效果图：

调用过程：

 string WCFURL = "http://localhost:100/Service1.svc";

            UserRequest user = new UserRequest { UserName = UserName.Text, Address = Address.Text, Email = Email.Text };

            string request = "{\"request\":" + new JavaScriptSerializer().Serialize(user) + "}";
            string returnContent = WCFHelper.SendHttpRequest(WCFURL, "GetUserInfo", request);

            UserResult re = new JavaScriptSerializer().Deserialize<UserResult>(returnContent);

            lblText.Text = re.Result;

WCF项目中配置文件节点配置：

 <system.serviceModel>
     <behaviors>
       <endpointBehaviors>
         <behavior name="httpBehavior">
           <webHttp />
         </behavior>
       </endpointBehaviors>
       <serviceBehaviors>
         <behavior name="">
           <serviceMetadata httpGetEnabled="true" />
           <serviceDebug includeExceptionDetailInFaults="false" />
         </behavior>
       </serviceBehaviors>
     </behaviors>
     <services>
       <service name="WCFServices.Service1">
         <endpoint address=""
                   behaviorConfiguration="httpBehavior"
                   binding="webHttpBinding"
                   contract="WCFServices.IService1" />
       </service>
     </services>
   </system.serviceModel>

WCF项目请求接口：

 [ServiceContract]
    public interface IService1
    {
        [OperationContract]
        [WebInvoke(Method = "POST", UriTemplate = "GetUserInfo",
            BodyStyle = WebMessageBodyStyle.WrappedRequest, //包装请求，但不包装相应  注：如果设置为包装相应，返回的JSON结果会加一个 壳
            ResponseFormat = WebMessageFormat.Json,
            RequestFormat = WebMessageFormat.Json)]
        UserResult GetUserInfo(UserRequest request);
    }

WCF项目实现方法：

  public UserResult GetUserInfo(Model.UserRequest request)
        {
            return new UserResult { Result = request.UserName + "地址是：" + request.Address + ",邮箱是：" + request.Email };
        }

项目下载地址： http://download.csdn.net/detail/vincent_void/7676403