作法：使用 ChannelFactory

會在需要建立通道處理站的進階案例中使用泛型 ChannelFactory<TChannel> 類別，以建立多個通道。

建立及使用 ChannelFactory 類別

1. 建置並執行 Windows Communication Foundation (WCF) 服務。 如需詳細資訊，請參閱設計和實作服務、設定服務及裝載服務。

2. 使用 ServiceModel 中繼資料公用程式工具 (Svcutil.exe) 來為用戶端產生合約 (介面)。

3. 在用戶端程式碼中，使用 ChannelFactory<TChannel> 類別以建立多個端點接聽項。

範例

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("http://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();
    }
}

Imports System.ServiceModel

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

Public Class Math
    Implements IMath

    Function Add(a As Double, 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("http://localhost/MathService/Ep1")

        Dim myChannelFactory As 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