IBindingDeliveryCapabilities.AssuresOrderedDelivery 属性
定义
获取一个值,该值指示绑定是否可以支持按消息发送顺序传递消息的保证。Gets a value that indicates whether the binding can support assurances for the delivery of messages in the order they were sent.
public:
property bool AssuresOrderedDelivery { bool get(); };
public bool AssuresOrderedDelivery { get; }
member this.AssuresOrderedDelivery : bool
Public ReadOnly Property AssuresOrderedDelivery As Boolean
属性值
如果消息必须按发送顺序传递,则为 true;如果消息可以不按此顺序传递,则为 false。true if messages must be delivered in the order in which they were sent; false, if the messages might not be delivered in this order.
示例
下面的示例要求 CalculatorService 必须对有序消息传递使用 WSHttpBinding。The following sample requires that CalculatorService must use a WSHttpBinding with ordered message delivery. 可靠会话和排队传递默认不用于此绑定,但可以启用它们。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" ?>
<configuration>
<system.serviceModel>
<services>
<service
type="Microsoft.ServiceModel.Samples.CalculatorService">
<!-- Use base address provided by host and a WSHttpBinding named "Binding1" -->
<endpoint address=""
binding="wsHttpBinding"
bindingConfiguration="Binding1"
contract="Microsoft.ServiceModel.Samples.ICalculator" />
</service>
</services>
<bindings>
<wsHttpBinding>
<binding name="Binding1">
<!-- The next element enables a ReliableSession and required ordered delivery-->
<reliableSession enabled="true" ordered="true"/>
</binding>
</wsHttpBinding>
</bindings>
</system.serviceModel>
</configuration>
// 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;
[ServiceContract]
interface ICalculatorService
{
[OperationBehavior()]
int Add(int a, int b);
[OperationContract]
int Subtract(int a, int b);
}
[BindingRequirements(
QueuedDeliveryRequirements=RequirementsMode.Disallow,
RequireOrderedDelivery=true
)]
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;
}
}
注解
在运行时加载服务的描述时,此 AssuresOrderedDelivery 属性的值由 RequireOrderedDelivery 使用。The value of this AssuresOrderedDelivery property is consumed by the RequireOrderedDelivery when the description of the service is loaded at runtime. 此检查用于确定为服务选择或创建的绑定是否满足服务的有序传递要求。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.