ThreadAbortException Classe

Définition

public ref class ThreadAbortException sealed : SystemException

public sealed class ThreadAbortException : SystemException

[System.Serializable]
public sealed class ThreadAbortException : SystemException

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class ThreadAbortException : SystemException

type ThreadAbortException = class
    inherit SystemException

[<System.Serializable>]
type ThreadAbortException = class
    inherit SystemException

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type ThreadAbortException = class
    inherit SystemException

Public NotInheritable Class ThreadAbortException
Inherits SystemException

Héritage

Object

Exception

SystemException

ThreadAbortException

Attributs

SerializableAttribute ComVisibleAttribute

Exemples

L’exemple suivant illustre l’abandon d’un thread. Le thread qui reçoit le ThreadAbortException utilise la ResetAbort méthode pour annuler la demande d’abandon et poursuivre l’exécution.

using namespace System;
using namespace System::Threading;
using namespace System::Security::Permissions;
ref class ThreadWork
{
public:
   static void DoWork()
   {
      try
      {
         for ( int i = 0; i < 100; i++ )
         {
            Console::WriteLine( "Thread - working." );
            Thread::Sleep( 100 );

         }
      }
      catch ( ThreadAbortException^ e ) 
      {
         Console::WriteLine( "Thread - caught ThreadAbortException - resetting." );
         Console::WriteLine( "Exception message: {0}", e->Message );
         Thread::ResetAbort();
      }

      Console::WriteLine( "Thread - still alive and working." );
      Thread::Sleep( 1000 );
      Console::WriteLine( "Thread - finished working." );
   }

};

int main()
{
   ThreadStart^ myThreadDelegate = gcnew ThreadStart( ThreadWork::DoWork );
   Thread^ myThread = gcnew Thread( myThreadDelegate );
   myThread->Start();
   Thread::Sleep( 100 );
   Console::WriteLine( "Main - aborting my thread." );
   myThread->Abort();
   myThread->Join();
   Console::WriteLine( "Main ending." );
}

using System;
using System.Threading;
using System.Security.Permissions;

public class ThreadWork {
    public static void DoWork() {
        try {
            for(int i=0; i<100; i++) {
                Console.WriteLine("Thread - working.");
                Thread.Sleep(100);
            }
        }
        catch(ThreadAbortException e) {
            Console.WriteLine("Thread - caught ThreadAbortException - resetting.");
            Console.WriteLine("Exception message: {0}", e.Message);
            Thread.ResetAbort();
        }
        Console.WriteLine("Thread - still alive and working.");
        Thread.Sleep(1000);
        Console.WriteLine("Thread - finished working.");
    }
}

class ThreadAbortTest {
    public static void Main() {
        ThreadStart myThreadDelegate = new ThreadStart(ThreadWork.DoWork);
        Thread myThread = new Thread(myThreadDelegate);
        myThread.Start();
        Thread.Sleep(100);
        Console.WriteLine("Main - aborting my thread.");
        myThread.Abort();
        myThread.Join();
        Console.WriteLine("Main ending.");
    }
}

Imports System.Threading
Imports System.Security.Permissions


Public Class ThreadWork
   Public Shared Sub DoWork()
      Try
         Dim i As Integer
         For i = 0 To 99
            Console.WriteLine("Thread - working.")
            Thread.Sleep(100)
         Next i
      Catch e As ThreadAbortException
         Console.WriteLine("Thread - caught ThreadAbortException - resetting.")
         Console.WriteLine("Exception message: {0}", e.Message)
         Thread.ResetAbort()
      End Try
      Console.WriteLine("Thread - still alive and working.")
      Thread.Sleep(1000)
      Console.WriteLine("Thread - finished working.")
   End Sub
End Class


Class ThreadAbortTest
   Public Shared Sub Main()
      Dim myThreadDelegate As New ThreadStart(AddressOf ThreadWork.DoWork)
      Dim myThread As New Thread(myThreadDelegate)
      myThread.Start()
      Thread.Sleep(100)
      Console.WriteLine("Main - aborting my thread.")
      myThread.Abort()
      myThread.Join()
      Console.WriteLine("Main ending.")
   End Sub
End Class

Ce code génère la sortie suivante :

Thread - working.  
Main - aborting my thread.  
Thread - caught ThreadAbortException - resetting.  
Exception message: Thread was being aborted.  
Thread - still alive and working.  
Thread - finished working.  
Main ending.  

Remarques

Lorsqu’un appel est passé à la Abort méthode pour détruire un thread, le Common Language Runtime lève une exception ThreadAbortException . ThreadAbortException est une exception spéciale qui peut être interceptée, mais qui est déclenchée automatiquement à la fin du catch bloc. Lorsque cette exception est levée, le runtime exécute tous les finally blocs avant de terminer le thread. Étant donné que le thread peut effectuer un calcul non lié dans les finally blocs ou appeler Thread.ResetAbort pour annuler l’abandon, il n’y a aucune garantie que le thread se termine. Si vous souhaitez attendre la fin du thread abandonné, vous pouvez appeler la Thread.Join méthode. Join est un appel bloquant qui ne retourne pas jusqu’à ce que le thread arrête réellement l’exécution.

.Net Core uniquement : Même si ce type existe dans .NET Core, étant donné que Abort n’est pas pris en charge, le Common Language Runtime ne lève jamais d’exception ThreadAbortException .

ThreadAbortException utilise le COR_E_THREADABORTED HRESULT, qui a la valeur 0x80131530.

Propriétés

Méthodes

Événements

S’applique à

Voir aussi

• Thread
• Abort(Object)
• Détruire des threads