本文整理汇总了VB.NET中System.Windows.Threading.Dispatcher.VerifyAccess方法的典型用法代码示例。如果您正苦于以下问题:VB.NET Dispatcher.VerifyAccess方法的具体用法?VB.NET Dispatcher.VerifyAccess怎么用?VB.NET Dispatcher.VerifyAccess使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了Dispatcher.VerifyAccess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,您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。
示例1: TryToUpdateButtonVerifyAccess
' Uses the Dispatcher.VerifyAccess method to determine if
' the calling thread has access to the thread the UI object is on.
Private Sub TryToUpdateButtonVerifyAccess(ByVal uiObject As Object)
Dim theButton As Button = TryCast(uiObject, Button)
If theButton IsNot Nothing Then
Try
' Check if this thread has access to this object.
theButton.Dispatcher.VerifyAccess()
' The thread has access to the object, so update the UI.
UpdateButtonUI(theButton)
' Cannot access objects on the thread.
Catch e As InvalidOperationException
' Exception Error Message.
MessageBox.Show("Exception ToString: " & vbLf & vbLf & e.ToString(), "Execption Caught! Thrown During AccessVerify().")
MessageBox.Show("Pushing job onto UI Thread Dispatcher")
' Placing job onto the Dispatcher of the UI Thread.
theButton.Dispatcher.BeginInvoke(DispatcherPriority.Normal, New UpdateUIDelegate(AddressOf UpdateButtonUI), theButton)
End Try
End If
End Sub
开发者ID:VB.NET开发者,项目名称:System.Windows.Threading,代码行数:25,代码来源:Dispatcher.VerifyAccess
注:本文中的System.Windows.Threading.Dispatcher.VerifyAccess方法示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,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。 |
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