TextPatternRange.Clone 方法
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
擷取新的 TextPatternRange，與原始 TextPatternRange 相同且繼承其所有屬性。
public:
System::Windows::Automation::Text::TextPatternRange ^ Clone();public System.Windows.Automation.Text.TextPatternRange Clone ();member this.Clone : unit -> System.Windows.Automation.Text.TextPatternRangePublic Function Clone () As TextPatternRange傳回
新的文字範圍。 從未傳回 Null 參考 (在 Visual Basic 中為 Nothing)。
範例
private TextPatternRange CloneSelection(AutomationElement target)
{
// Specify the control type we're looking for, in this case 'Document'
PropertyCondition cond = new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document);
// target --> The root AutomationElement.
AutomationElement textProvider = target.FindFirst(TreeScope.Descendants, cond);
TextPattern textpatternPattern = textProvider.GetCurrentPattern(TextPattern.Pattern) as TextPattern;
if (textpatternPattern == null)
{
Console.WriteLine("Root element does not contain a descendant that supports TextPattern.");
return null;
}
TextPatternRange[] currentSelection = textpatternPattern.GetSelection();
return currentSelection[0].Clone();
}
Private Function CloneSelection(ByVal target As AutomationElement) As TextPatternRange
' Specify the control type we're looking for, in this case 'Document'
Dim cond As PropertyCondition = New PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document)
' target --> The root AutomationElement.
Dim textProvider As AutomationElement = target.FindFirst(TreeScope.Descendants, cond)
Dim textpatternPattern As TextPattern = CType(textProvider.GetCurrentPattern(TextPattern.Pattern), TextPattern)
If (textpatternPattern Is Nothing) Then
Console.WriteLine("Root element does not contain a descendant that supports TextPattern.")
Return Nothing
End If
Dim currentSelection As TextPatternRange() = textpatternPattern.GetSelection()
Return currentSelection.Clone(0)
End Function
備註
或者，從 TextPattern 建立新的 DocumentRange ，並移動兩個端點，以對應原始文字範圍的端點。
新的範圍可以獨立于原始範圍進行操作。