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TextPatternRange.Compare(TextPatternRange) Method

  • Reference

Definition

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

Returns a Boolean value indicating whether the span (the Start endpoint to the End endpoint) of a text range is the same as another text range.

public:
 bool Compare(System::Windows::Automation::Text::TextPatternRange ^ range);
public bool Compare (System.Windows.Automation.Text.TextPatternRange range);
member this.Compare : System.Windows.Automation.Text.TextPatternRange -> bool
Public Function Compare (range As TextPatternRange) As Boolean

Parameters

range
TextPatternRange

A text range to compare.

Returns

Boolean

true if the span of both text ranges is identical; otherwise false.

Exceptions

ArgumentException

If the range being compared does not come from the same text provider.

Examples

private Boolean CompareRanges(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 false;
    }
    TextPatternRange[] currentSelection = textpatternPattern.GetSelection();
    TextPatternRange[] currentVisibleRanges = textpatternPattern.GetVisibleRanges();
    return currentSelection[0].Compare(currentVisibleRanges[0]);
}

Private Function CompareRanges(ByVal target As AutomationElement) As Boolean
    ' 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()
    Dim currentVisibleRange As TextPatternRange() = textpatternPattern.GetVisibleRanges()
    Return currentSelection(0).Compare(currentVisibleRange(0))
End Function

Applies to

See also