HOW TO：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 類別，以建立多個通道。

建立及使用 ChannelFactory 類別

1. 建置及執行 Windows Communication Foundation (WCF) 服務。如需詳細資訊，請參閱 設計與實作服務、設定服務和裝載服務。

2. 使用 ServiceModel 中繼資料公用程式工具 (Svcutil.exe) 產生用戶端的合約 (介面)。

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

範例

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();
    }
}