Silverlight与WCF之间的通信(1)SL客户端定时请求WCF服务

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：

代码

// 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 >

到这里呢，一个服务就Host在IIS上了，可以通过浏览服务或服务引用进行验证服务是否正常运行。

二，在Silverlight中向服务器请求数据

代码

public partial class MainPage : UserControl
{
Timer timer;
ChatService.ChatServiceClient proxy;

BasicHttpBinding binding;
EndpointAddress endPoint;

public MainPage()
{
InitializeComponent();

binding = new BasicHttpBinding();
endPoint = new EndpointAddress( " http://localhost:1939/ChatService.svc%22);

timer = new Timer( new TimerCallback(GetMessages), this , 100 , 100 );
}

#region 定时检测信息
public void GetMessages( object obj)
{
proxy = new ChatService.ChatServiceClient(binding,endPoint);
proxy.GetMessagesCompleted += new EventHandler < ChatService.GetMessagesCompletedEventArgs > (GetMessagesComleted);
proxy.GetMessagesAsync( " wengyuli " );
}

void GetMessagesComleted( object sender,ChatService.GetMessagesCompletedEventArgs e)
{
if (e.Error == null )
{
if ( this .listMsgs.dispatcher.CheckAccess())
{
this .listMsgs.ItemsSource = e.Result;
}
else
{
this .listMsgs.dispatcher.BeginInvoke(() => { this .listMsgs.ItemsSource = e.Result; });
}
}
}
#endregion

#region 发送信息
private void btnSend_Click( object sender,RoutedEventArgs e)
{
ChatService.MessageInfo message = new ChatService.MessageInfo();
message.ID = Guid.NewGuid().ToString();
message.Receipt = 0 ;
message.ReceiveMode = " user " ;
message.ReceiveOrgan = "" ;
message.ReceiveUser = " xiejianjun " ;
message.Message = this .txtMessage.Text;
message.Sender = " wengyuli " ;
message.SendTime = DateTime.Now;
message.source = " web " ;
message.State = 0 ;
message.Title = this .txtMessage.Text;

proxy = new ChatService.ChatServiceClient(binding,endPoint);
proxy.SendMessageCompleted += new EventHandler < ChatService.SendMessageCompletedEventArgs > (SendMessageComleted);

proxy.SendMessageAsync(message);
}
void SendMessageComleted( object sender,ChatService.SendMessageCompletedEventArgs e)
{
if (e.Error == null )
{
// MessageBox.Show("服务器返回结果：" + e.Result);
}
}
#endregion
}

前台：

< ListBox Height ="213" HorizontalAlignment ="Left" displayMemberPath ="Message" ItemsSource =" {Binding MessageInfo} " Name ="listMsgs" VerticalAlignment ="Top" Width ="283" ></ ListBox >

编译并运行后得到数据：

http://www.cnblogs.com/wengyuli/archive/2010/06/18/silverlight-wcf.html

Silverlight与WCF之间的通信(1)SL客户端定时请求WCF服务

一 ，需要建立一个WCF的服务端

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一，需要建立一个WCF的服务端