在服務導向解決方案中使用管線

客戶服務協調流程 （CustomerService） 的內嵌版本會直接呼叫付款追蹤系統。 若要準備傳送的訊息並處理收到的訊息，協調流程會從程式代碼呼叫管線。 這允許重複使用其他情境版本中的管線。 它也會維護協調流程與管線階段的分離。

呼叫管線

若要使用程式代碼中的管線，您必須建立訊息集合、將訊息新增至集合、建立空白訊息以接收結果訊息，以及叫用管線。

CustomerService 協調流程中的下列程式代碼位於 ConstructRequestMessageAfterSendPipeline 圖形中：

// Create the collection of messages to be sent to the send pipeline...  
sendPipelineInputMessages =   
    new Microsoft.XLANGs.Pipeline.SendPipelineInputMessages();  
sendPipelineInputMessages.Add(LastPaymentRequest);  
  
// Create an empty message for the output from the pipeline...  
LastPaymentRequestAfterSendPipeline = null;  
  
// Execute the send pipeline and get the message output from   
// the send pipeline.  
Microsoft.XLANGs.Pipeline.XLANGPipelineManager.  
    ExecuteSendPipeline(  
        typeof(  
            Microsoft.Samples.BizTalk.  
                WoodgroveBank.PaymentTrackerPipelines.  
                    PaymentTrackerSendPipeline  
        ),  
        sendPipelineInputMessages,  
        LastPaymentRequestAfterSendPipeline  
    );  

GetLastPaymentResponse 圖形會從上述程式代碼取得訊息、將訊息傳送至付款追蹤系統，並透過接收管線處理傳回的訊息：

// Execute the inline method to send the message to the   
// Payment Tracking System and get the response.  
// The response message received should be passed through the   
// receive pipeline.  
  
LastPaymentResponseBeforeReceivePipeline =   
    Microsoft.Samples.BizTalk.  
        WoodgroveBank.  
            PaymentTrackerCall.  
                PaymentTrackerCaller.  
                    GetPaymeTrackerResponse  
                    (  
                        LastPaymentRequestAfterSendPipeline  
                    );   
  
// Execute the receive pipeline using the helper class so that we don't  
// need to declare the non-serializable types involved.  
  
// Set the documentspec name so the xml disassembler in the   
// pipeline can resolve the schemas for the received message  
// without ambiguity.  
LastPaymentResponseBeforeReceivePipeline(XMLNORM.DocumentSpecName) =   
"Microsoft.Samples.BizTalk.WoodgroveBank.Schemas.LastPaymentResponse, Microsoft.Samples.BizTalk.WoodgroveBank.Schemas, Version=1.0.0.0, Culture=neutral, PublicKeyToken=5f57a322d27bc5fb";  
// Create an empty response message and fill it in with the   
// real response from the Payment Tracking System  
LastPaymentResponse = null;  
  
Microsoft.Samples.BizTalk.WoodgroveBank.Utilities.  
    ReceivePipelineHelper.CallReceivePipeLine (  
        typeof(  
            Microsoft.Samples.BizTalk.WoodgroveBank.  
                PaymentTrackerPipelines.PaymentTrackerReceivePipeline  
            ),  
            LastPaymentResponseBeforeReceivePipeline,  
            LastPaymentResponse  
        );  

另請參閱

服務導向解決方案的實作重點