ISponsor.Renewal(ILease) 方法

定義

命名空間:

System.Runtime.Remoting.Lifetime

組件:

mscorlib.dll

要求贊助的用戶端更新指定物件的使用期。

public:
 TimeSpan Renewal(System::Runtime::Remoting::Lifetime::ILease ^ lease);

public TimeSpan Renewal (System.Runtime.Remoting.Lifetime.ILease lease);

[System.Security.SecurityCritical]
public TimeSpan Renewal (System.Runtime.Remoting.Lifetime.ILease lease);

abstract member Renewal : System.Runtime.Remoting.Lifetime.ILease -> TimeSpan

[<System.Security.SecurityCritical>]
abstract member Renewal : System.Runtime.Remoting.Lifetime.ILease -> TimeSpan

Public Function Renewal (lease As ILease) As TimeSpan

參數

lease

ILease

需要使用期更新的物件的存留期使用期。

傳回

TimeSpan

指定的物件的額外使用期時間。

屬性

SecurityCriticalAttribute

例外狀況

SecurityException

立即呼叫者透過對介面的參考進行呼叫，且沒有基礎結構權限。

範例

public ref class MyClientSponsor: public MarshalByRefObject, public ISponsor
{
private:
   DateTime lastRenewal;

public:
   MyClientSponsor()
   {
      lastRenewal = DateTime::Now;
   }

   [SecurityPermissionAttribute(SecurityAction::LinkDemand,Flags=SecurityPermissionFlag::Infrastructure)]
   virtual TimeSpan Renewal( ILease^ /* lease */ )
   {
      Console::WriteLine( "Request to renew the lease time." );
      Console::WriteLine( "Time since last renewal: {0}",
         DateTime::Now - lastRenewal );

      lastRenewal = DateTime::Now;
      return TimeSpan::FromSeconds( 20 );
   }
};

public class MyClientSponsor : MarshalByRefObject, ISponsor
{
   private DateTime lastRenewal;
   public MyClientSponsor()
   {
      lastRenewal = DateTime.Now;
   }

   public TimeSpan Renewal(ILease lease)
   {
      Console.WriteLine("Request to renew the lease time.");
      Console.WriteLine("Time since last renewal: " +
         (DateTime.Now - lastRenewal).ToString());

      lastRenewal = DateTime.Now;
      return TimeSpan.FromSeconds(20);
   }
}

Public Class MyClientSponsor
   Inherits MarshalByRefObject
   Implements ISponsor 
   Private lastRenewal As DateTime
   
   Public Sub New()
      lastRenewal = DateTime.Now
   End Sub
   
   <SecurityPermission(SecurityAction.LinkDemand, Flags := SecurityPermissionFlag.Infrastructure)> _
   Public Function Renewal(lease As ILease) As TimeSpan Implements ISponsor.Renewal
      Console.WriteLine("Request to renew the lease time.")
      Console.WriteLine("Time since last renewal: " + _ 
                      DateTime.op_Subtraction(DateTime.Now, lastRenewal).ToString())
      
      lastRenewal = DateTime.Now
      Return TimeSpan.FromSeconds(20)
   End Function 'Renewal
End Class

備註

分散式 Renewal 垃圾收集行程會呼叫 方法，以更新指定物件的租用。