MarshalByRefObject.InitializeLifetimeService Methode

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Assembly:

netstandard.dll

Assembly:

mscorlib.dll

Achtung

This Remoting API is not supported and throws PlatformNotSupportedException.

Ruft ein Lebensdauerdienstobjekt zur Steuerung der Lebensdauerrichtlinie für diese Instanz ab.

public:
 virtual System::Object ^ InitializeLifetimeService();

[System.Obsolete("This Remoting API is not supported and throws PlatformNotSupportedException.", DiagnosticId="SYSLIB0010", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public virtual object InitializeLifetimeService ();

public virtual object InitializeLifetimeService ();

[System.Security.SecurityCritical]
public virtual object InitializeLifetimeService ();

[<System.Obsolete("This Remoting API is not supported and throws PlatformNotSupportedException.", DiagnosticId="SYSLIB0010", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
abstract member InitializeLifetimeService : unit -> obj
override this.InitializeLifetimeService : unit -> obj

abstract member InitializeLifetimeService : unit -> obj
override this.InitializeLifetimeService : unit -> obj

[<System.Security.SecurityCritical>]
abstract member InitializeLifetimeService : unit -> obj
override this.InitializeLifetimeService : unit -> obj

Public Overridable Function InitializeLifetimeService () As Object

Gibt zurück

Object

Ein Objekt vom Typ ILease, das zur Steuerung der Lebensdauerrichtlinien für diese Instanz verwendet wird. Dies ist das aktuelle Lebensdauerdienstobjekt für diese Instanz, sofern vorhanden, bzw. ein neues Lebensdauerdienstobjekt, das mit dem Wert der LeaseManagerPollTime-Eigenschaft initialisiert wurde.

Attribute

ObsoleteAttribute SecurityCriticalAttribute

Ausnahmen

SecurityException

Der direkte Aufrufer verfügt nicht über die Berechtigung für die Infrastruktur.

PlatformNotSupportedException

Nur .NET Core und .NET 5 und höher: In allen Fällen.

Beispiele

Im folgenden Codebeispiel wird das Erstellen einer Lease veranschaulicht.

public ref class MyClass: public MarshalByRefObject
{
public:
   
   [System::Security::Permissions::SecurityPermissionAttribute
   (System::Security::Permissions::SecurityAction::Demand,
   Flags=System::Security::Permissions::SecurityPermissionFlag::Infrastructure)]
   virtual Object^ InitializeLifetimeService() override
   {
      ILease^ lease = dynamic_cast<ILease^>(MarshalByRefObject::InitializeLifetimeService());
      if ( lease->CurrentState == LeaseState::Initial )
      {
         lease->InitialLeaseTime = TimeSpan::FromMinutes( 1 );
         lease->SponsorshipTimeout = TimeSpan::FromMinutes( 2 );
         lease->RenewOnCallTime = TimeSpan::FromSeconds( 2 );
      }

      return lease;
   }

};

public class MyClass : MarshalByRefObject
{
  [SecurityPermissionAttribute(SecurityAction.Demand,
                               Flags=SecurityPermissionFlag.Infrastructure)]
  public override Object InitializeLifetimeService()
  {
    ILease lease = (ILease)base.InitializeLifetimeService();
    if (lease.CurrentState == LeaseState.Initial)
    {
         lease.InitialLeaseTime = TimeSpan.FromMinutes(1);
         lease.SponsorshipTimeout = TimeSpan.FromMinutes(2);
          lease.RenewOnCallTime = TimeSpan.FromSeconds(2);
    }
      return lease;
  }
}

Public Class LSClass
    Inherits MarshalByRefObject
    
    <SecurityPermissionAttribute(SecurityAction.Demand, _
                                 Flags:=SecurityPermissionFlag.Infrastructure)> _
    Public Overrides Function InitializeLifetimeService() As Object
        Dim lease As ILease = CType(MyBase.InitializeLifetimeService(), ILease)
        If lease.CurrentState = LeaseState.Initial Then
            lease.InitialLeaseTime = TimeSpan.FromMinutes(1)
            lease.SponsorshipTimeout = TimeSpan.FromMinutes(2)
            lease.RenewOnCallTime = TimeSpan.FromSeconds(2)
        End If
        Return lease
    End Function


    Public Shared Sub Main()  
    ' The main thread processing is here.
    End Sub
End Class

Hinweise

Diese Methode wird ab .NET 5 als veraltet markiert.

Weitere Informationen zu Lebensdauerdiensten finden Sie in der LifetimeServices -Klasse.