SelectionItemPattern.SelectionItemPatternInformation.SelectionContainer 属性
定义
重要
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获取支持 SelectionPattern 控件模式并充当调用对象的容器的 AutomationElement。
public:
property System::Windows::Automation::AutomationElement ^ SelectionContainer { System::Windows::Automation::AutomationElement ^ get(); };public System.Windows.Automation.AutomationElement SelectionContainer { get; }member this.SelectionContainer : System.Windows.Automation.AutomationElementPublic ReadOnly Property SelectionContainer As AutomationElement属性值
容器对象。 默认为空引用（在 Visual Basic 中为 Nothing）。
示例
以下示例演示如何检索 AutomationElement 表示选定项的选择容器。
///--------------------------------------------------------------------
/// <summary>
/// Retrieves the selection container for a selection item.
/// </summary>
/// <param name="selectionItem">
/// An automation element that supports SelectionItemPattern.
/// </param>
///--------------------------------------------------------------------
private AutomationElement GetSelectionItemContainer(
AutomationElement selectionItem)
{
// Selection item cannot be null
if (selectionItem == null)
{
throw new ArgumentException();
}
SelectionItemPattern selectionItemPattern =
selectionItem.GetCurrentPattern(SelectionItemPattern.Pattern)
as SelectionItemPattern;
if (selectionItemPattern == null)
{
return null;
}
else
{
return selectionItemPattern.Current.SelectionContainer;
}
}
'''--------------------------------------------------------------------
''' <summary>
''' Retrieves the selection container for a selection item.
''' </summary>
''' <param name="selectionItem">
''' An automation element that supports SelectionItemPattern.
''' </param>
'''--------------------------------------------------------------------
Private Function GetSelectionItemContainer( _
ByVal selectionItem As AutomationElement) As AutomationElement
' Selection item cannot be null
If selectionItem Is Nothing Then
Throw New ArgumentException()
End If
Dim selectionItemPattern As SelectionItemPattern = _
DirectCast(selectionItem.GetCurrentPattern( _
selectionItemPattern.Pattern), SelectionItemPattern)
If selectionItemPattern Is Nothing Then
Return Nothing
Else
Return selectionItemPattern.Current.SelectionContainer
End If
End Function 'GetSelectionItemContainer