HostProtectionAttribute.ExternalThreading Propriété

Définition

Espace de noms:

System.Security.Permissions

Assembly:

System.Security.Permissions.dll

Assembly:

mscorlib.dll

Obtient ou définit une valeur qui indique si les threads externes son exposés.

public:
 property bool ExternalThreading { bool get(); void set(bool value); };

public bool ExternalThreading { get; set; }

member this.ExternalThreading : bool with get, set

Public Property ExternalThreading As Boolean

Valeur de propriété

Boolean

true si les threads externes sont exposés ; sinon, false. La valeur par défaut est false.

Exemples

L’exemple de code suivant illustre l’utilisation de l’attribut HostProtectionAttribute avec la ExternalThreading propriété. Cet exemple fait partie d’un exemple plus grand fourni pour la HostProtectionAttribute classe.

// Use the enumeration flags to indicate that this method exposes synchronization 
//  and external threading.

[HostProtection(Synchronization=true,ExternalThreading=true)]
static void StartThread()
{
   Thread^ t = gcnew Thread( gcnew ThreadStart( WatchFileEvents ) );
   
   // Start the new thread.  On a uniprocessor, the thread is not given 
   // any processor time until the main thread yields the processor.  
   t->Start();
   
   // Give the new thread a chance to execute.
   Thread::Sleep( 1000 );
}

// Use the enumeration flags to indicate that this method exposes 
// synchronization and external threading.
[HostProtectionAttribute(Synchronization=true, ExternalThreading=true)]
private static void StartThread()
{
    Thread t = new Thread(new ThreadStart(WatchFileEvents));
    
    // Start the new thread. On a uniprocessor, the thread is not given
    // any processor time until the main thread yields the processor.
    t.Start();
    
    // Give the new thread a chance to execute.
    Thread.Sleep(1000);
}

' Use the enumeration flags to indicate that this method exposes  
' synchronization and external threading.
<HostProtectionAttribute(Synchronization := True, _
    ExternalThreading := True)> _
Private Shared Sub StartThread()
    Dim t As New Thread(New ThreadStart(AddressOf WatchFileEvents))

    ' Start the new thread. On a uniprocessor, the thread is not given 
    ' any processor time until the main thread yields the processor.  
    t.Start()

    ' Give the new thread a chance to execute.
    Thread.Sleep(1000)
End Sub

Remarques

Le code qui expose le threading externe crée ou manipule des threads autres que son propre, qui peut être dangereux pour l’hôte.

Voir aussi

• ExternalThreading