設定用戶端行為

Windows Communication Foundation (WCF) 會以兩種方式設定行為：一種是參考行為組態 (定義於用戶端應用程式組態檔的 <behavior> 區段中)，另一種是以程式設計方式透過呼叫應用程式。 這個主題將描述這兩種方法。

使用組態檔時，行為組態都是具名的組態設定集合。 每個行為組態的名稱必須是獨一無二的。 會在端點組態的 behaviorConfiguration 屬性中使用這個字串，以便將端點連結至行為。

範例 1

下列組態程式碼會定義名稱為 myBehavior 的行為。 用戶端端點會參考 behaviorConfiguration 屬性中的這個行為。

<configuration>  
    <system.serviceModel>  
        <behaviors>  
            <endpointBehaviors>  
                <behavior name="myBehavior">  
                    <clientVia />  
                </behavior>  
            </endpointBehaviors>  
        </behaviors>  
        <bindings>  
            <basicHttpBinding>  
                <binding name="myBinding" maxReceivedMessageSize="10000" />  
            </basicHttpBinding>  
        </bindings>  
        <client>  
            <endpoint address="myAddress" binding="basicHttpBinding" bindingConfiguration="myBinding" behaviorConfiguration="myBehavior" contract="myContract" />  
        </client>  
    </system.serviceModel>  
</configuration>  

以程式設計方式使用行為

您也可以透過程式設計方式來設定或插入行為，方法是在開啟用戶端之前，於 Windows Communication Foundation (WCF) 用戶端物件或用戶端通道處理站物件上尋找適當的 Behaviors 屬性。

範例 2

下列程式碼範例會示範如何以程式設計的方式插入行為，其方法是先存取傳回自 Behaviors 屬性之 ServiceEndpoint 上的 Endpoint 屬性，再建立通道物件。

public class Client
{
  public static void Main()
  {
    try
    {
      // Picks up configuration from the config file.
      ChannelFactory<ISampleServiceChannel> factory
        = new ChannelFactory<ISampleServiceChannel>("WSHttpBinding_ISampleService");

      // Add the client side behavior programmatically to all created channels.
      factory.Endpoint.Behaviors.Add(new EndpointBehaviorMessageInspector());

      ISampleServiceChannel wcfClientChannel = factory.CreateChannel();

      // Making calls.
      Console.WriteLine("Enter the greeting to send: ");
      string greeting = Console.ReadLine();
      Console.WriteLine("The service responded: " + wcfClientChannel.SampleMethod(greeting));

      Console.WriteLine("Press ENTER to exit:");
      Console.ReadLine();

      // Done with service.
      wcfClientChannel.Close();
      Console.WriteLine("Done!");
    }
    catch (TimeoutException timeProblem)
    {
      Console.WriteLine("The service operation timed out. " + timeProblem.Message);
      Console.Read();
    }
    catch (FaultException<SampleFault> fault)
    {
      Console.WriteLine("SampleFault fault occurred: {0}", fault.Detail.FaultMessage);
      Console.Read();
    }
    catch (CommunicationException commProblem)
    {
      Console.WriteLine("There was a communication problem. " + commProblem.Message);
      Console.Read();
    }
  }

Public Class Client
    Public Shared Sub Main()
        Try
            ' Picks up configuration from the config file.
            Dim factory As New ChannelFactory(Of ISampleServiceChannel)("WSHttpBinding_ISampleService")

            ' Add the client side behavior programmatically to all created channels.
            factory.Endpoint.Behaviors.Add(New EndpointBehaviorMessageInspector())

            Dim wcfClientChannel As ISampleServiceChannel = factory.CreateChannel()

            ' Making calls.
            Console.WriteLine("Enter the greeting to send: ")
            Dim greeting As String = Console.ReadLine()
            Console.WriteLine("The service responded: " & wcfClientChannel.SampleMethod(greeting))

            Console.WriteLine("Press ENTER to exit:")
            Console.ReadLine()

            ' Done with service. 
            wcfClientChannel.Close()
            Console.WriteLine("Done!")
        Catch timeProblem As TimeoutException
            Console.WriteLine("The service operation timed out. " & timeProblem.Message)
            Console.Read()
        Catch fault As FaultException(Of SampleFault)
            Console.WriteLine("SampleFault fault occurred: {0}", fault.Detail.FaultMessage)
            Console.Read()
        Catch commProblem As CommunicationException
            Console.WriteLine("There was a communication problem. " & commProblem.Message)
            Console.Read()
        End Try
    End Sub

另請參閱

• <behaviors>