当前位置: 首页>>代码示例>>VB.NET>>正文


VB.NET WorkflowInstance.EnqueueItem方法代码示例

本文整理汇总了VB.NET中System.Workflow.Runtime.WorkflowInstance.EnqueueItem方法的典型用法代码示例。如果您正苦于以下问题:VB.NET WorkflowInstance.EnqueueItem方法的具体用法?VB.NET WorkflowInstance.EnqueueItem怎么用?VB.NET WorkflowInstance.EnqueueItem使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Workflow.Runtime.WorkflowInstance的用法示例。


在下文中一共展示了WorkflowInstance.EnqueueItem方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。

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
开发者ID:VB.NET开发者,项目名称:System.Workflow.Runtime,代码行数:27,代码来源:WorkflowInstance.EnqueueItem


注:本文中的System.Workflow.Runtime.WorkflowInstance.EnqueueItem方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。