本文整理汇总了VB.NET中System.Windows.Automation.ScrollPattern.ScrollVertical方法的典型用法代码示例。如果您正苦于以下问题：VB.NET ScrollPattern.ScrollVertical方法的具体用法？VB.NET ScrollPattern.ScrollVertical怎么用？VB.NET ScrollPattern.ScrollVertical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ScrollPattern.ScrollVertical方法的2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: GetScrollPattern
'''--------------------------------------------------------------------
''' <summary>
''' Obtains a ScrollPattern control pattern from an
''' automation element.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <returns>
''' A ScrollPattern object.
''' </returns>
'''--------------------------------------------------------------------
Private Function GetScrollPattern( _
ByVal targetControl As AutomationElement) As ScrollPattern
Dim scrollPattern As ScrollPattern = Nothing
Try
scrollPattern = DirectCast( _
targetControl.GetCurrentPattern(scrollPattern.Pattern), _
ScrollPattern)
Catch
' Object doesn't support the ScrollPattern control pattern
Return Nothing
End Try
Return scrollPattern
End Function 'GetScrollPattern示例2: ScrollElementVertically
'''--------------------------------------------------------------------
''' <summary>
''' Obtains a ScrollPattern control pattern from an automation
''' element and attempts to horizontally scroll the requested amount.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <param name="vScrollAmount">
''' The requested vertical scroll amount.
''' </param>
'''--------------------------------------------------------------------
Private Sub ScrollElementVertically( _
ByVal targetControl As AutomationElement, _
ByVal vScrollAmount As ScrollAmount)
If targetControl Is Nothing Then
Throw New ArgumentNullException( _
"AutomationElement argument cannot be null.")
End If
Dim scrollPattern As ScrollPattern = GetScrollPattern(targetControl)
If scrollPattern Is Nothing Then
Return
End If
If Not scrollPattern.Current.VerticallyScrollable Then
Return
End If
Try
scrollPattern.ScrollVertical(vScrollAmount)
Catch exc As InvalidOperationException
' Control not able to scroll in the direction requested;
' when scrollable property of that direction is False
' TO DO: error handling.
Catch exc As ArgumentException
' If a control supports SmallIncrement values exclusively
' for horizontal or vertical scrolling but a LargeIncrement
' value (NaN if not supported) is passed in.
' TO DO: error handling.
End Try
End Sub