Bearbeiten

Freigeben über

TextPattern.GetSelection Method

  • Reference

Definition

Namespace:
System.Windows.Automation
Assembly:
UIAutomationClient.dll

Retrieves a collection of disjoint text ranges associated with the current text selection or selections.

public:
 cli::array <System::Windows::Automation::Text::TextPatternRange ^> ^ GetSelection();
public System.Windows.Automation.Text.TextPatternRange[] GetSelection ();
member this.GetSelection : unit -> System.Windows.Automation.Text.TextPatternRange[]
Public Function GetSelection () As TextPatternRange()

Returns

TextPatternRange[]

A collection of disjoint text ranges.

Exceptions

InvalidOperationException

The text container does not support text selection.

Examples

private TextPatternRange CurrentSelection(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];
}

Private Function CurrentSelection(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 currentTextSelection As TextPatternRange() = textpatternPattern.GetSelection()
    Return currentTextSelection(0)
End Function

Remarks

If no text is selected, GetSelection returns the degenerate text range (empty range) at the position of the system cursor (text insertion point).

If the system cursor (text insertion point) is not present, GetSelection might return null.

Note

Use the SupportedTextSelection property to test if text selection or positioning of the text insertion point is supported by the control.

Applies to

See also