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ClientSponsor Class

Provides a default implementation for a lifetime sponsor class.

Namespace:  System.Runtime.Remoting.Lifetime
Assembly:  mscorlib (in mscorlib.dll)

[ComVisibleAttribute(true)]
[SecurityPermissionAttribute(SecurityAction.InheritanceDemand, Flags = SecurityPermissionFlag.Infrastructure)]
[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.Infrastructure)]
public class ClientSponsor : MarshalByRefObject, 
	ISponsor

The current lifetime sponsor implementation can be used to sponsor objects by specifying the required renewal TimeSpan.

NoteNote:

This class makes a link demand and an inheritance demand at the class level. A SecurityException is thrown when either the immediate caller or the derived class does not have infrastructure permission. For details about security demands, see Link Demands and Inheritance Demands.

The following example illustrates the ClientSponsor class to extend the life of a class-activated remote object.

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;
using System.Runtime.Remoting.Lifetime;
namespace RemotingSamples
{

   class HelloClient
   {
       static void Main()
      {
         // Register a channel.
         TcpChannel myChannel = new TcpChannel ();
         ChannelServices.RegisterChannel(myChannel);
         RemotingConfiguration.RegisterActivatedClientType(
                                typeof(HelloService),"tcp://localhost:8085/");

         // Get the remote object.
         HelloService myService = new HelloService();

         // Get a sponsor for renewal of time.
         ClientSponsor mySponsor = new ClientSponsor();

         // Register the service with sponsor.
         mySponsor.Register(myService);

         // Set renewaltime.
         mySponsor.RenewalTime = TimeSpan.FromMinutes(2);

         // Renew the lease.
         ILease myLease = (ILease)mySponsor.InitializeLifetimeService();
         TimeSpan myTime = mySponsor.Renewal(myLease);
         Console.WriteLine("Renewed time in minutes is " + myTime.Minutes.ToString());

         // Call the remote method.
         Console.WriteLine(myService.HelloMethod("World"));

         // Unregister the channel.
         mySponsor.Unregister(myService);
         mySponsor.Close();
      }
   }

}
#using <mscorlib.dll>
#using <system.dll>
#using <system.runtime.remoting.dll>
#using <ClientSponsor_Share.dll>

using namespace System;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Channels::Tcp;
using namespace System::Runtime::Remoting::Lifetime;

int main() 
{
	// Register a channel.
	TcpChannel* myChannel = new TcpChannel();
	ChannelServices::RegisterChannel(myChannel);
	RemotingConfiguration::RegisterActivatedClientType(__typeof(RemotingSamples::HelloService), S"tcp://localhost:8085/");

	// Get the remote Object*.
	RemotingSamples::HelloService* myService = new RemotingSamples::HelloService();

	// Get a sponsor for renewal of time.
	ClientSponsor* mySponsor = new ClientSponsor();

	// Register the service with sponsor.
	mySponsor->Register(myService);

	// Set renewaltime.
	mySponsor->RenewalTime = TimeSpan::FromMinutes(2);

	// Renew the lease.
	ILease* myLease = dynamic_cast<ILease*>(mySponsor->InitializeLifetimeService());
	TimeSpan myTime = mySponsor->Renewal(myLease);
	Console::WriteLine(S"Renewed time in minutes is {0}", __box(myTime.Minutes));

	// Call the remote method.
	Console::WriteLine(myService->HelloMethod(S"World"));

	// Unregister the channel.
	mySponsor->Unregister(myService);
	mySponsor->Close();

	return 0;
}

System.Object
  System.MarshalByRefObject
    System.Runtime.Remoting.Lifetime.ClientSponsor

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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