Silverlight与WCF之间的通信（1）SL客户端定时请求WCF服务

Silverlight与WCF之间的通信（1）SL客户端定时请求WCF服务2011-09-29 博客园翁玉礼这几天在做一个Silverlight的页面聊天工具，基本上从头看了一遍Silverlight和WCF相关的东西，也遇到了不少问题，刚开始是用Silverlight做了定时请求服务器的数据信息，后期准备利用WCF的双工通信来做，通信过程分为两个部分记录。

一，需要建立一个WCF的服务端

这里直接在Silverlight的站点中新建了一个WCF服务，代码如下：

//先定义服务契约
[ServiceContract]
     public interface IChatService
     {
         [OperationContract]
         bool SendMessage（MessageInfo msg）;
         [OperationContract]
         List<MessageInfo> GetMessages（string UserAccount）;
     }
//再定义数据契约
[DataContract]
     public class MessageInfo 
     {
         [DataMember]
         public string ID { set; get; }
         [DataMember]
         public string Title { set; get; }
         [DataMember]
         public string Message { set; get; }
         [DataMember]
         public DateTime SendTime { set; get; }
         [DataMember]
         public DateTime？ ReadTime { set; get; }
         [DataMember]
         public string Sender { set; get; }
         [DataMember]
         public string ReceiveUser { set; get; }
         [DataMember]
         public string ReceiveOrgan { set; get; }
         [DataMember]
         public string ReceiveMode { set; get; }
         [DataMember]
         public int State { set; get; }
         [DataMember]
         public int Receipt { set; get; }
         [DataMember]
         public string Source { set; get; }
     }
//最后在webconfig中配置好服务
<system.serviceModel>
         <behaviors>
             <serviceBehaviors>
                 <behavior name="ChatBehavior">
                     <serviceMetadata httpGetEnabled="true" />
                     <serviceDebug includeExceptionDetailInFaults="false" />
                 </behavior>
             </serviceBehaviors>
         </behaviors>
       <services>
         <service behaviorConfiguration="ChatBehavior" name="WebChat.Web.ChatService">
           <endpoint address="" binding="basicHttpBinding"  contract="WebChat.Web.IChatService"></endpoint>
         </service>
       </services>
         <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
     </system.serviceModel>