Tracking_SqlTrackingQuery(3)

 

Activity状态对象:ActivityTrackingRecord

Activity状态对象ActivityTrackingRecord以集合成员的方式存于SqlTrackingWorkflowInstance的ActivityEvents集合中

 无须在WorkflowRuntime宿主程序中

        Shared Sub 得到Activity运行状况列表(ByVal 实例Id As Guid)

            Dim sql As String = "Initial Catalog=Tracking;Data Source=WXWINTER\SQLEXPRESS;Integrated Security=SSPI;"

            Dim 查询As SqlTrackingQuery = New SqlTrackingQuery(sql)

            Dim 被查询的实例As SqlTrackingWorkflowInstance = Nothing

            查询.TryGetWorkflow(实例Id, 被查询的实例)

            If 被查询的实例IsNot Nothing Then

                Console.WriteLine(vbCrLf + "Activity 曾发生的状态列表:" + vbCrLf)

                Console.WriteLine()

                Dim Activity状态As ActivityTrackingRecord

                For Each Activity状态In 被查询的实例.ActivityEvents

                    Console.WriteLine("Activity类型:" + Activity状态.ActivityType.ToString)

                    Console.WriteLine("Activity上下文GUID:" + Activity状态.ContextGuid.ToString)

                    Console.WriteLine("该状态发生的时间:" + Activity状态.EventDateTime.ToString)

                    Console.WriteLine("Activity曾发生的状态:" + Activity状态.ExecutionStatus.ToString)

                    Console.WriteLine("EventOrder字段值:" + Activity状态.EventOrder.ToString)

                    Console.WriteLine("Activity容器对象GUID:" + Activity状态.ParentContextGuid.ToString)

                    Console.WriteLine("Activity名(开发时对象名):" + Activity状态.QualifiedName)

                    Console.WriteLine()

                    '此时，该WorkFlow 类本身也作为一个Activity被记录状态，他是所有Activity的容器

                    '有些Activity可以成为另一个Activity的容器

'Activity可能会有如下状态

                    'Canceling、Closed、Compensating、Executing、Faulting、Initialized

                Next

            End If

 

属性

ActivityType	Activity类型
Annotations
Body
ContextGuid	Activity上下文GUID
EventArgs
EventDateTime	该状态发生的时间
EventOrder	EventOrder字段值
ExecutionStatus	状态说明,ActivityExecutionStatus类型,值如下 'Canceling、Closed、Compensating、Executing、Faulting、Initialized
ParentContext	Activity容器对象GUID
QualifiedName	Activity名(开发时对象名)