本文整理匯總了VB.NET中System.Workflow.Runtime.WorkflowInstance.EnqueueItem方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET WorkflowInstance.EnqueueItem方法的具體用法？VB.NET WorkflowInstance.EnqueueItem怎麽用？VB.NET WorkflowInstance.EnqueueItem使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Workflow.Runtime.WorkflowInstance的用法示例。
在下文中一共展示了WorkflowInstance.EnqueueItem方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: OnWorkflowIdled
Shared Sub OnWorkflowIdled(ByVal sender As Object, ByVal e As WorkflowEventArgs)
Dim workflow As WorkflowInstance = e.WorkflowInstance
Console.WriteLine(vbCrLf + "...waiting for 3 seconds... " + vbCrLf)
Thread.Sleep(3000)
' what activity is blocking the workflow
Dim wqi As ReadOnlyCollection(Of WorkflowQueueInfo) = workflow.GetWorkflowQueueData()
For Each q As WorkflowQueueInfo In wqi
Dim eq As EventQueueName = TryCast(q.QueueName, EventQueueName)
If eq IsNot Nothing Then
' get activity that is waiting for event
Dim blockedActivity As ReadOnlyCollection(Of String) = q.SubscribedActivityNames
Console.WriteLine("Host: Workflow is blocked on " + blockedActivity(0))
' this event is never going to arrive eg. employee left the company
' lets send an exception to this queue
' it will either be handled by exception handler that was modeled in workflow
' or the runtime will unwind running compensation handlers and exit the workflow
Console.WriteLine("Host: This event is not going to arrive")
Console.WriteLine("Host: Cancel workflow with unhandled exception")
workflow.EnqueueItem(q.QueueName, New Exception("ExitWorkflowException"), Nothing, Nothing)
End If
Next
End Sub