PingCompletedEventArgs.Reply Properti

Definisi

Ruang nama:

System.Net.NetworkInformation

Rakitan:

System.Net.Ping.dll

Sumber:

PingCompletedEventArgs.cs

Mendapatkan objek yang berisi data yang menjelaskan upaya untuk mengirim pesan permintaan gema Internet Control Message Protocol (ICMP) dan menerima pesan balasan gema ICMP yang sesuai.

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

Nilai Properti

PingReply

Objek PingReply yang menjelaskan hasil permintaan gema ICMP.

Contoh

Contoh kode berikut mengimplementasikan metode yang digunakan untuk merespons peristiwa PingCompleted . Untuk contoh lengkapnya, lihat gambaran PingCompletedEventArgs umum kelas.

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();
}

Keterangan

Jika nilai Status bukan Success, Anda tidak boleh menggunakan nilai yang dikembalikan oleh RoundtripTimeproperti , Options, dan Buffer . Properti RoundtripTime dan Buffer akan mengembalikan nol, dan Options properti akan mengembalikan null.