Comment : utiliser la classe ChannelFactory

La classe ChannelFactory générique est utilisée dans les scénarios avancés qui requièrent la création d'une fabrication de canal pouvant être utilisée pour créer plusieurs canaux.

Pour créer et utiliser la classe ChannelFactory

1. Générez et exécutez un service Windows Communication Foundation (WCF). Pour plus d'informations, consultez Conception et implémentation de services, Configuration des services et Hébergement de services.

2. Utilisez Outil Service Model Metadata Tool (Svcutil.exe) pour générer le contrat (interface) pour le client.

3. Dans le code client, utilisez la classe ChannelFactory pour créer plusieurs écouteurs de point de terminaison.

Exemple

Imports System
Imports System.ServiceModel

' This code generated by svcutil.exe.
<ServiceContract()>  _
Interface IMath
    <OperationContract()>  _
    Function Add(ByVal A As Double, ByVal B As Double) As Double 
End Interface 

public class Math
    Implements IMath

    Function Add(ByVal A As Double, ByVal B As Double) As Double Implements IMath.Add
       Return A + B
    End Function
End Class

Public Class Test
    Public Shared Sub Main()
    End Sub

    Public Sub Run()
        ' This code is written by an application developer.
        ' Create a channel factory.
        Dim myBinding As New BasicHttpBinding
    Dim myEndpoint As New EndpointAddress("https://localhost/MathService/Ep1")

        Dim myChannelFactory As ChannelFactory(Of IMath) = _
        New ChannelFactory(Of IMath) (myBinding, myEndpoint) 

        'Create a channel.
        Dim wcfClient1 As IMath = myChannelFactory.CreateChannel()
        Dim s As Integer = wcfClient1.Add(3, 39)
        Console.WriteLine(s.ToString())
    Dim clientChannel As IClientChannel = CType(wcfClient1, IClientChannel)
        clientChannel.Close()

        ' Create another channel
        Dim wcfClient2 As IMath = myChannelFactory.CreateChannel()
        s = wcfClient2.Add(15, 27)
        Console.WriteLine(s.ToString())
    clientChannel = CType(wcfClient2, IClientChannel)
        clientChannel.Close()
    myChannelFactory.Close()
    End Sub
End Class

using System;
using System.ServiceModel;

// This code generated by svcutil.exe.
[ServiceContract()]
interface IMath
{
    [OperationContract()]
     double Add(double A, double B);
}

public class Math : IMath
{
    public double Add(double A, double B) 
    {
        return A + B;
    }
}

public sealed class Test
{
    static void Main()
    {
        // Code not shown.
    }

    public void Run()
    {
        // This code is written by an application developer.
        // Create a channel factory.
        BasicHttpBinding myBinding = new BasicHttpBinding();
    
        EndpointAddress myEndpoint = new EndpointAddress("https://localhost/MathService/Ep1");

        ChannelFactory<IMath> myChannelFactory = new ChannelFactory<IMath>(myBinding, myEndpoint);

        // Create a channel.
        IMath wcfClient1 = myChannelFactory.CreateChannel();
        double s = wcfClient1.Add(3, 39);
        Console.WriteLine(s.ToString());
    ((IClientChannel)wcfClient1).Close();

        // Create another channel.
        IMath wcfClient2 = myChannelFactory.CreateChannel();
        s = wcfClient2.Add(15, 27);
        Console.WriteLine(s.ToString());
    ((IClientChannel)wcfClient2).Close();
    myChannelFactory.Close();
    }
}