MarshalByRefObject.InitializeLifetimeService Metodo

Definizione

Spazio dei nomi:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll

Ottiene un oggetto servizio di durata per controllare i criteri di durata per questa istanza.Obtains a lifetime service object to control the lifetime policy for this instance.

public:
 virtual System::Object ^ InitializeLifetimeService();
public virtual object InitializeLifetimeService ();
[System.Security.SecurityCritical]
public virtual object InitializeLifetimeService ();
abstract member InitializeLifetimeService : unit -> obj
override this.InitializeLifetimeService : unit -> obj
Public Overridable Function InitializeLifetimeService () As Object

Restituisce

Object

Oggetto di tipo ILease utilizzato per il controllo dei criteri di durata per l'istanza.An object of type ILease used to control the lifetime policy for this instance. Si tratta dell'oggetto servizio di durata corrente per l'istanza, se esistente; in caso contrario, ne viene inizializzato uno nuovo sul valore della proprietà LeaseManagerPollTime.This is the current lifetime service object for this instance if one exists; otherwise, a new lifetime service object initialized to the value of the LeaseManagerPollTime property.

Attributi
SecurityCriticalAttribute

Eccezioni

SecurityException

Il chiamante immediato non dispone dell'autorizzazione di infrastruttura.The immediate caller does not have infrastructure permission.

Esempio

Nell'esempio di codice riportato di seguito viene illustrata la creazione di un lease.The following code example demonstrates creating a lease.

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

Commenti

Per ulteriori informazioni sui servizi di durata, vedere la classe LifetimeServices.For more information about lifetime services, see the LifetimeServices class.

Si applica a