CorrelationInitializer.CorrelationHandle 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取或设置相关初始值设定项的 CorrelationHandle 参数。
public:
property System::Activities::InArgument<System::ServiceModel::Activities::CorrelationHandle ^> ^ CorrelationHandle { System::Activities::InArgument<System::ServiceModel::Activities::CorrelationHandle ^> ^ get(); void set(System::Activities::InArgument<System::ServiceModel::Activities::CorrelationHandle ^> ^ value); };public System.Activities.InArgument<System.ServiceModel.Activities.CorrelationHandle> CorrelationHandle { get; set; }member this.CorrelationHandle : System.Activities.InArgument<System.ServiceModel.Activities.CorrelationHandle> with get, setPublic Property CorrelationHandle As InArgument(Of CorrelationHandle)属性值
相关句柄自变量。
示例
下面的示例演示如何在 SendReply 活动中指定相关初始值设定项。
new SendReply
{
Request = submitPO,
Content = SendContent.Create(new InArgument<int>( (e) => po.Get(e).Id)), // creates a SendMessageContent
CorrelationInitializers =
{
new QueryCorrelationInitializer
{
// initializes a correlation based on the PurchaseOrder Id sent in the reply message and stores it in the handle
CorrelationHandle = poidHandle,
MessageQuerySet = new MessageQuerySet
{
// int is the name of the parameter being sent in the outgoing response
{ "PoId", new XPathMessageQuery("sm:body()/ser:int", Constants.XPathMessageContext) }
}
}
}
},
注解
运行时使用 CorrelationHandle 进行关联（如果存在），否则将使用消息传递活动的 CorrelatesWith 属性。 如果二者都不存在，则将使用 CorrelationScope 提供的环境句柄或工作流服务。
