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使用SilverLight构建插件式应用程序(九) —聊天插件客户端的实现

 2008-10-30 11:48:57 来源:WEB开发网   
核心提示: 这个实体类的定义其实是可以自动生成的,2:把对WCF服务的访问方法单独处理成一个对象,使用SilverLight构建插件式应用程序(九) —聊天插件客户端的实现(2),模式和结构基本和MSDN上那篇文章一样:public void Start(){// Instantiate the bi

这个实体类的定义其实是可以自动生成的。

2:把对WCF服务的访问方法单独处理成一个对象,模式和结构基本和MSDN上那篇文章一样:

 public void Start()
    {
      // Instantiate the binding and set the time-outs
      PollingDuplexHttpBinding binding = new PollingDuplexHttpBinding()
      {
        ReceiveTimeout = TimeSpan.FromSeconds(45),
        InactivityTimeout = TimeSpan.FromMinutes(1)
      };
      // Instantiate and open channel factory from binding
      IChannelFactory<IDuplexSessionChannel> factory =
        binding.BuildChannelFactory<IDuplexSessionChannel>(new BindingParameterCollection());
      IAsyncResult factoryOpenResult =
        factory.BeginOpen(new AsyncCallback(OnOpenCompleteFactory), factory);
      if (factoryOpenResult.CompletedSynchronously)
      {
        CompleteOpenFactory(factoryOpenResult);
      }
    }
    void OnOpenCompleteFactory(IAsyncResult result)
    {
      if (result.CompletedSynchronously)
        return;
      else
        CompleteOpenFactory(result);
    }
    void CompleteOpenFactory(IAsyncResult result)
    {
      IChannelFactory<IDuplexSessionChannel> factory =
        (IChannelFactory<IDuplexSessionChannel>)result.AsyncState;
      factory.EndOpen(result);
      // The factory is now open. Create and open a channel from the channel factory.
      IDuplexSessionChannel channel =
        factory.CreateChannel(new EndpointAddress(ServiceUrl));
      IAsyncResult channelOpenResult =
        channel.BeginOpen(new AsyncCallback(OnOpenCompleteChannel), channel);
      if (channelOpenResult.CompletedSynchronously)
      {
        CompleteOpenChannel(channelOpenResult);
      }
    }
    void OnOpenCompleteChannel(IAsyncResult result)
    {
      if (result.CompletedSynchronously)
        return;
      else
        CompleteOpenChannel(result);
  
    }

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Tags:使用 SilverLight 构建

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