PingCompletedEventArgs.Reply 属性

定义

命名空间:

System.Net.NetworkInformation

程序集:

System.Net.Ping.dll

Source:

PingCompletedEventArgs.cs

获取包含数据的对象，该数据描述发送 Internet 控制消息协议 (ICMP) 回送请求消息并接受相应的 ICMP 回送答复消息的尝试。

public:
 property System::Net::NetworkInformation::PingReply ^ Reply { System::Net::NetworkInformation::PingReply ^ get(); };

public System.Net.NetworkInformation.PingReply? Reply { get; }

member this.Reply : System.Net.NetworkInformation.PingReply

Public ReadOnly Property Reply As PingReply

属性值

PingReply

一个 PingReply 对象，描述 ICMP 回送请求结果。

示例

下面的代码示例实现用于响应 PingCompleted 事件的方法。 有关完整示例，请参阅 PingCompletedEventArgs 类概述。

void PingCompletedCallback( Object^ /*sender*/, PingCompletedEventArgs^ e )
{
   
   // If the operation was canceled, display a message to the user.
   if ( e->Cancelled )
   {
      Console::WriteLine( "Ping canceled." );
      
      // Let the main thread resume. 
      // UserToken is the AutoResetEvent object that the main thread 
      // is waiting for.
      (dynamic_cast<AutoResetEvent^>(e->UserState))->Set();
   }

   
   // If an error occurred, display the exception to the user.
   if ( e->Error != nullptr )
   {
      Console::WriteLine( "Ping failed:" );
      Console::WriteLine( e->Error->ToString() );
      
      // Let the main thread resume. 
      (dynamic_cast<AutoResetEvent^>(e->UserState))->Set();
   }

   PingReply ^ reply = e->Reply;
   DisplayReply( reply );
   
   // Let the main thread resume.
   (dynamic_cast<AutoResetEvent^>(e->UserState))->Set();
}

private static void PingCompletedCallback (object sender, PingCompletedEventArgs e)
{
    // If the operation was canceled, display a message to the user.
    if (e.Cancelled)
    {
        Console.WriteLine ("Ping canceled.");

        // Let the main thread resume.
        // UserToken is the AutoResetEvent object that the main thread
        // is waiting for.
        ((AutoResetEvent)e.UserState).Set ();
    }

    // If an error occurred, display the exception to the user.
    if (e.Error != null)
    {
        Console.WriteLine ("Ping failed:");
        Console.WriteLine (e.Error.ToString ());

        // Let the main thread resume.
        ((AutoResetEvent)e.UserState).Set();
    }

    PingReply reply = e.Reply;

    DisplayReply (reply);

    // Let the main thread resume.
    ((AutoResetEvent)e.UserState).Set();
}

注解

如果 的值Status不是 Success，则不应使用 、 RoundtripTimeOptions和 Buffer 属性返回的值。 RoundtripTime和 Buffer 属性将返回零，属性Options将返回 null。