UrlAttribute Classe

Définition

public ref class UrlAttribute sealed : System::Runtime::Remoting::Contexts::ContextAttribute

[System.Serializable]
public sealed class UrlAttribute : System.Runtime.Remoting.Contexts.ContextAttribute

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class UrlAttribute : System.Runtime.Remoting.Contexts.ContextAttribute

[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Security.SecurityCritical]
public sealed class UrlAttribute : System.Runtime.Remoting.Contexts.ContextAttribute

[<System.Serializable>]
type UrlAttribute = class
    inherit ContextAttribute

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type UrlAttribute = class
    inherit ContextAttribute

[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
[<System.Security.SecurityCritical>]
type UrlAttribute = class
    inherit ContextAttribute

Public NotInheritable Class UrlAttribute
Inherits ContextAttribute

Héritage

Object

Attribute

ContextAttribute

UrlAttribute

Attributs

SerializableAttribute ComVisibleAttribute SecurityCriticalAttribute

Exemples

L’exemple de code suivant illustre l’utilisation de la configuration de la UrlAttribute communication à distance activée par le client. L’exemple contient trois parties : un client, un serveur et un objet distant utilisé par le client et le serveur.

L’exemple de code suivant montre un client :

#using <System.Runtime.Remoting.dll>
#using <System.dll>
#using "RemoteObject.dll"

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

[STAThread]
int main()
{
   
   // Report initial status.
   Console::WriteLine( "Client starting." );
   
   // Register TCP channel.
   ChannelServices::RegisterChannel( gcnew TcpChannel );
   
   // Create UrlAttribute.
   UrlAttribute^ attribute = gcnew UrlAttribute( "tcp://localhost:1234/RemoteApp" );
   Console::WriteLine( "UrlAttribute value: {0}", attribute->UrlValue );
   
   array<Object^>^activationAttributes = {attribute};
   
   // Use UrlAttribute to register for client activated remote object.
   RemotingConfiguration::RegisterActivatedClientType( RemoteObject::typeid, "tcp://localhost:1234/RemoteApp" );
   
   // Activate remote object.
   Console::WriteLine( "Activating remote object." );
   RemoteObject ^ obj = dynamic_cast<RemoteObject^>(Activator::CreateInstance( RemoteObject::typeid, nullptr, activationAttributes ));
   
   // Invoke a method on it.
   Console::WriteLine( "Invoking Hello() on remote object." );
   obj->Hello();
   
   // Inform user of termination.
   Console::WriteLine( "Terminating client." );
}

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Activation;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;

public class Client
{
    [STAThread]
    public static void Main()
    {
        // Report the initial status.
        Console.WriteLine("Starting client.");

        // Register the TCP channel.
        ChannelServices.RegisterChannel(new TcpChannel());

        // Create a url attribute object.
        UrlAttribute attribute =
            new UrlAttribute("tcp://localhost:1234/RemoteApp");
        Console.WriteLine("UrlAttribute value: {0}", attribute.UrlValue);
        object[] activationAttributes = new object[] { attribute };

        // Register the client for the remote object.
        RemotingConfiguration.RegisterActivatedClientType(
            typeof(RemoteObject),
            "tcp://localhost:1234/RemoteApp");

        // Activate the remote object.
        Console.WriteLine("Activating remote object.");
        RemoteObject obj = (RemoteObject) Activator.CreateInstance(
            typeof(RemoteObject), null, activationAttributes);

        // Invoke a method on the remote object.
        Console.WriteLine("Invoking Hello() on remote object.");
        obj.Hello();

        // Inform the user that the program is exiting.
        Console.WriteLine("The client is exiting.");
    }
}

L’exemple de code suivant montre un serveur pour ce client :

#using <System.Runtime.Remoting.dll>
#using <System.dll>
#using "RemoteObject.dll"

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

[STAThread]
int main()
{
   
   // Report status to user.
   Console::WriteLine( "Server starting." );
   
   // Register the TCP channel.
   ChannelServices::RegisterChannel( gcnew TcpChannel( 1234 ) );
   
   // Set application name.
   RemotingConfiguration::ApplicationName = "RemoteApp";
   
   // Register object for client activated remoting.
   RemotingConfiguration::RegisterActivatedServiceType( RemoteObject::typeid );
   
   // Wait until termination.
   Console::WriteLine( "Press enter to end." );
   Console::ReadLine();
   Console::WriteLine( "Terminating server." );
}

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Tcp;

public class Server
{
    [STAThread]
    public static void Main()
    {
        // Report the status to the user.
        Console.WriteLine("Starting server.");

        // Register the TCP channel.
        ChannelServices.RegisterChannel(new TcpChannel(1234));

        // Set the application name.
        RemotingConfiguration.ApplicationName = "RemoteApp";

        // Register the object for remoting.
        RemotingConfiguration.RegisterActivatedServiceType(
            typeof(RemoteObject));

        // Wait until the user presses ENTER.
        Console.WriteLine("Press ENTER to exit.");
        Console.ReadLine();
        Console.WriteLine("The server is exiting.");
    }
}

L’exemple de code suivant montre l’objet distant utilisé par le client et le serveur :

using namespace System;
using namespace System::Security;
using namespace System::Security::Permissions;

[assembly:AllowPartiallyTrustedCallersAttribute];
public ref class RemoteObject: public MarshalByRefObject
{
public:
   RemoteObject()
   {
      
      // Report object construction to server's console.
      Console::WriteLine( "You have called the constructor." );
   }

   void Hello()
   {
      
      // Report method invocation to server's console.
      Console::WriteLine( "You have called Hello()." );
   }

};

using System;
using System.Security;
using System.Security.Permissions;

public class RemoteObject : MarshalByRefObject
{
    public RemoteObject()
    {
        Console.WriteLine("You have called the constructor.");
    }

    public void Hello()
    {
        Console.WriteLine("You have called Hello().");
    }
}

Remarques

Le UrlAttribute tableau d’attributs d’activation est transmis en tant que paramètre lors Activator.CreateInstance de la création d’objets activés avec la CreateInstance méthode.

Pour plus d’informations sur l’utilisation d’attributs, consultez Attributs.

Constructeurs

Champs

Propriétés

Méthodes

Implémentations d’interfaces explicites

S’applique à

Voir aussi

• ContextAttribute
• IContextProperty