本文整理匯總了VB.NET中System.Windows.Threading.Dispatcher.VerifyAccess方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET Dispatcher.VerifyAccess方法的具體用法？VB.NET Dispatcher.VerifyAccess怎麽用？VB.NET Dispatcher.VerifyAccess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。
在下文中一共展示了Dispatcher.VerifyAccess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: 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