IBindingDeliveryCapabilities.AssuresOrderedDelivery 屬性


取得值,這個值指出繫結是否可以支援保證能夠以訊息傳送的順序來傳遞訊息。Gets a value that indicates whether the binding can support assurances for the delivery of messages in the order they were sent.

 property bool AssuresOrderedDelivery { bool get(); };
public bool AssuresOrderedDelivery { get; }
member this.AssuresOrderedDelivery : bool
Public ReadOnly Property AssuresOrderedDelivery As Boolean


如果必須以訊息傳送的順序來傳遞訊息,則為 true,如果可能無法以這個順序來傳遞訊息,則為 falsetrue if messages must be delivered in the order in which they were sent; false, if the messages might not be delivered in this order.


下列範例會要求 CalculatorService 必須使用 WSHttpBinding,並以排序的方式傳遞訊息。The following sample requires that CalculatorService must use a WSHttpBinding with ordered message delivery. 在預設情況下,可靠的工作階段和佇列傳遞不會搭配這個繫結一起使用,但是可加以啟用。Reliable sessions and queued delivery are not used by default with this binding, but can be enabled.

<!-- Here is the configuration for a CalculatorService using a WSHttpBinding with ordered message delivery required. -->  
<?xml version="1.0" encoding="utf-8" ?>  
            <!-- Use base address provided by host and a WSHttpBinding named "Binding1" -->  
            <endpoint address=""  
                      contract="Microsoft.ServiceModel.Samples.ICalculator" />  
            <binding name="Binding1">           
               <!-- The next element enables a ReliableSession and required ordered delivery-->  
      <reliableSession enabled="true" ordered="true"/>  
// The CalculatorService configuration has enabled a reliable session  
// with ordered delivery set to true. This means that the binding  
// requirement for ordered delivery specified by the  
// BindingRequirementsAttribute on the CalculatorService class  
// implemented below will be satisfied by this WSHttpBinding.  
using System;  
using System.ServiceModel;  
interface ICalculatorService  
  int Add(int a, int b);    
  int Subtract(int a, int b);  
class CalculatorService: ICalculatorService  
  public int Add(int a, int b)  
    Console.WriteLine("Add called.");  
    return a + b;   
  public int Subtract(int a, int b)  
    Console.WriteLine("Subtract called.");  
    return a - b;  
  public int Multiply(int a, int b)  
    return a * b;  


在執行階段載入此服務的說明時,AssuresOrderedDelivery 會取用這個 RequireOrderedDelivery 屬性的值。The value of this AssuresOrderedDelivery property is consumed by the RequireOrderedDelivery when the description of the service is loaded at runtime. 執行這項檢查的目的是要判斷,是否可由針對服務選取或建立的繫結來滿足此服務的排序傳遞需求。This check is done to determine whether the ordered delivery requirements of the service are satisfied by the binding selected or created for the service.