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TextPatternRange::FindAttribute Method

Returns a text range subset that has the specified attribute value.

Namespace:  System.Windows.Automation.Text
Assembly:  UIAutomationClient (in UIAutomationClient.dll)

public:
TextPatternRange^ FindAttribute(
	AutomationTextAttribute^ attribute, 
	Object^ value, 
	bool backward
)

Parameters

attribute
Type: System.Windows.Automation::AutomationTextAttribute

The attribute to search for.

value
Type: System::Object

The attribute value to search for. This value must match the type specified for the attribute.

backward
Type: System::Boolean

true if the last occurring text range should be returned instead of the first; otherwise false.

Return Value

Type: System.Windows.Automation.Text::TextPatternRange
A text range having a matching attribute and attribute value; otherwise null (Nothing in Microsoft Visual Basic .NET).

There is no differentiation between hidden and visible text. UI Automation clients can use IsHiddenAttribute to check text visibility.

NoteNote

Use DocumentRange to search the entire document.

 private TextPatternRange RangeFromAttribute(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[] currentSelelction = textpatternPattern.GetSelection();
    // Find 'italic' range 
    return currentSelelction[0].FindAttribute(TextPattern.IsItalicAttribute, true, false);
}
Private Function RangeFromAttribute(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(0).FindAttribute(TextPattern.IsItalicAttribute, True, False)
End Function

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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