PingCompletedEventArgs 클래스

정의

네임스페이스:

System.Net.NetworkInformation

어셈블리:

System.Net.Ping.dll

Source:

PingCompletedEventArgs.cs

PingCompleted 이벤트에 대한 데이터를 제공합니다.

public ref class PingCompletedEventArgs : System::ComponentModel::AsyncCompletedEventArgs

public class PingCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs

type PingCompletedEventArgs = class
    inherit AsyncCompletedEventArgs

Public Class PingCompletedEventArgs
Inherits AsyncCompletedEventArgs

상속

Object

EventArgs

AsyncCompletedEventArgs

PingCompletedEventArgs

예제

다음 코드 예제에서는 ICMP 에코 요청을 비동기적으로 보내는 방법을 보여 줍니다.

#using <System.dll>

using namespace System;
using namespace System::Text;
using namespace System::Net;
using namespace System::Net::NetworkInformation;
using namespace System::ComponentModel;
using namespace System::Threading;
void PingCompletedCallback( Object^ sender, PingCompletedEventArgs^ e );
void DisplayReply( PingReply^ reply );
int main()
{
   array<String^>^args = Environment::GetCommandLineArgs();
   if ( args->Length == 1 )
      throw gcnew ArgumentException( "Ping needs a host or IP Address." );

   String^ who = args[ 1 ];
   AutoResetEvent^ waiter = gcnew AutoResetEvent( false );
   
   Ping ^ pingSender = gcnew Ping;
   
   // When the PingCompleted event is raised,
   // the PingCompletedCallback method is called.
   pingSender->PingCompleted += gcnew PingCompletedEventHandler( PingCompletedCallback );
   
   // Create a buffer of 32 bytes of data to be transmitted.
   String^ data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
   array<Byte>^buffer = Encoding::ASCII->GetBytes( data );
   
   // Wait 12 seconds for a reply.
   int timeout = 12000;
   
   // Set options for transmission:
   // The data can go through 64 gateways or routers
   // before it is destroyed, and the data packet
   // cannot be fragmented.
   PingOptions ^ options = gcnew PingOptions( 64,true );
   Console::WriteLine( "Time to live: {0}", options->Ttl );
   Console::WriteLine( "Don't fragment: {0}", options->DontFragment );
   
   // Send the ping asynchronously.
   // Use the waiter as the user token.
   // When the callback completes, it can wake up this thread.
   pingSender->SendAsync( who, timeout, buffer, options, waiter );
   
   // Prevent this example application from ending.
   // A real application should do something useful
   // when possible.
   waiter->WaitOne();
   Console::WriteLine( "Ping example completed." );
}


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();
}


void DisplayReply( PingReply ^ reply )
{
   if ( reply == nullptr )
      return;

   Console::WriteLine( "ping status: {0}", reply->Status );
   if ( reply->Status == IPStatus::Success )
   {
      Console::WriteLine( "Address: {0}", reply->Address->ToString() );
      Console::WriteLine( "RoundTrip time: {0}", reply->RoundtripTime );
      Console::WriteLine( "Time to live: {0}", reply->Options->Ttl );
      Console::WriteLine( "Don't fragment: {0}", reply->Options->DontFragment );
      Console::WriteLine( "Buffer size: {0}", reply->Buffer->Length );
   }
}

using System;
using System.Text;
using System.Net;
using System.Net.NetworkInformation;
using System.ComponentModel;
using System.Threading;

namespace Examples.System.Net.NetworkInformation.PingTest
{
    public class PingExample
    {
        public static void Main (string[] args)
        {
            if (args.Length == 0)
                throw new ArgumentException ("Ping needs a host or IP Address.");

            string who = args[0];
            AutoResetEvent waiter = new AutoResetEvent (false);

            Ping pingSender = new Ping ();

            // When the PingCompleted event is raised,
            // the PingCompletedCallback method is called.
            pingSender.PingCompleted += new PingCompletedEventHandler (PingCompletedCallback);

            // Create a buffer of 32 bytes of data to be transmitted.
            string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
            byte[] buffer = Encoding.ASCII.GetBytes (data);

            // Wait 12 seconds for a reply.
            int timeout = 12000;

            // Set options for transmission:
            // The data can go through 64 gateways or routers
            // before it is destroyed, and the data packet
            // cannot be fragmented.
            PingOptions options = new PingOptions (64, true);

            Console.WriteLine ("Time to live: {0}", options.Ttl);
            Console.WriteLine ("Don't fragment: {0}", options.DontFragment);

            // Send the ping asynchronously.
            // Use the waiter as the user token.
            // When the callback completes, it can wake up this thread.
            pingSender.SendAsync(who, timeout, buffer, options, waiter);

            // Prevent this example application from ending.
            // A real application should do something useful
            // when possible.
            waiter.WaitOne ();
            Console.WriteLine ("Ping example completed.");
        }

        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();
        }

        public static void DisplayReply (PingReply reply)
        {
            if (reply == null)
                return;

            Console.WriteLine ("ping status: {0}", reply.Status);
            if (reply.Status == IPStatus.Success)
            {
                Console.WriteLine ("Address: {0}", reply.Address.ToString ());
                Console.WriteLine ("RoundTrip time: {0}", reply.RoundtripTime);
                Console.WriteLine ("Time to live: {0}", reply.Options.Ttl);
                Console.WriteLine ("Don't fragment: {0}", reply.Options.DontFragment);
                Console.WriteLine ("Buffer size: {0}", reply.Buffer.Length);
            }
        }
    }
}

설명

이 클래스의 인스턴스는 호출이 완료될 PingCompletedEventHandler 때 호출되는 메서드에 SendAsync 전달됩니다. 메서드는 SendAsync ICMP(Internet Control Message Protocol) 에코 요청을 비동기적으로 보내고 해당 ICMP 에코 응답 메시지를 기다립니다. 속성은 Reply ICMP 에코 요청의 결과를 포함합니다.

속성

Cancelled	비동기 작업이 취소되었는지 여부를 나타내는 값을 가져옵니다. (다음에서 상속됨 AsyncCompletedEventArgs)
Error	비동기 작업 중 발생한 오류를 나타내는 값을 가져옵니다. (다음에서 상속됨 AsyncCompletedEventArgs)
Reply	ICMP(Internet Control Message Protocol) 에코 요청 메시지를 보낼 시도를 설명하는 데이터를 포함하는 개체를 가져와서 해당 ICMP 에코 응답 메시지를 받습니다.
UserState	비동기 작업의 고유 식별자를 가져옵니다. (다음에서 상속됨 AsyncCompletedEventArgs)

메서드

Equals(Object)	지정된 개체가 현재 개체와 같은지 확인합니다. (다음에서 상속됨 Object)
GetHashCode()	기본 해시 함수로 작동합니다. (다음에서 상속됨 Object)
GetType()	현재 인스턴스의 Type을 가져옵니다. (다음에서 상속됨 Object)
MemberwiseClone()	현재 Object의 단순 복사본을 만듭니다. (다음에서 상속됨 Object)
RaiseExceptionIfNecessary()	비동기 작업에 실패한 경우 사용자가 제공한 예외를 발생시킵니다. (다음에서 상속됨 AsyncCompletedEventArgs)
ToString()	현재 개체를 나타내는 문자열을 반환합니다. (다음에서 상속됨 Object)