ValuePattern.Pattern Fält

public: static initonly System::Windows::Automation::AutomationPattern ^ Pattern;

public static readonly System.Windows.Automation.AutomationPattern Pattern;

 staticval mutable Pattern : System.Windows.Automation.AutomationPattern

Public Shared ReadOnly Pattern As AutomationPattern 

Fältvärde

Exempel

I följande exempel hämtas ett ValuePattern kontrollmönster från en AutomationElement.

///--------------------------------------------------------------------
/// <summary>
/// Obtains a ValuePattern control pattern from an 
/// automation element.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
/// <returns>
/// A ValuePattern object.
/// </returns>
///--------------------------------------------------------------------
private ValuePattern GetValuePattern(
    AutomationElement targetControl)
{
    ValuePattern valuePattern = null;

    try
    {
        valuePattern =
            targetControl.GetCurrentPattern(
            ValuePattern.Pattern)
            as ValuePattern;
    }
    // Object doesn't support the ValuePattern control pattern
    catch (InvalidOperationException)
    {
        return null;
    }

    return valuePattern;
}

'''--------------------------------------------------------------------
''' <summary>
''' Obtains a ValuePattern control pattern from an 
''' automation element.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <returns>
''' A ValuePattern object.
''' </returns>
'''--------------------------------------------------------------------
Private Function GetValuePattern( _
ByVal targetControl As AutomationElement) As ValuePattern
    Dim valuePattern As ValuePattern = Nothing

    Try
        valuePattern = DirectCast( _
        targetControl.GetCurrentPattern(valuePattern.Pattern), _
        ValuePattern)
    Catch
        Return Nothing
    End Try

    Return valuePattern

End Function 'GetValuePattern

Kommentarer

Den här identifieraren används av UI Automation klientprogram. UI Automation providers bör använda motsvarande fält i ValuePatternIdentifiers.

Mönsteridentifieraren skickas till metoder som GetCurrentPattern att hämta kontrollmönstret av intresse från den angivna AutomationElement.

Se även

• Infoga textexempel i TextPattern