RangeValuePattern.ValueProperty Campo

Definición

Espacio de nombres:

System.Windows.Automation

Ensamblado:

UIAutomationClient.dll

Identifica la propiedad Value.

public: static initonly System::Windows::Automation::AutomationProperty ^ ValueProperty;

public static readonly System.Windows.Automation.AutomationProperty ValueProperty;

 staticval mutable ValueProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly ValueProperty As AutomationProperty 

Valor de campo

AutomationProperty

Ejemplos

En el ejemplo siguiente, un RangeValuePattern objeto obtenido de un control de destino se pasa a una función que recupera los valores de propiedad actuales RangeValuePattern .

///--------------------------------------------------------------------
/// <summary>
/// Gets the current property values from target.
/// </summary>
/// <param name="rangeValuePattern">
/// A RangeValuePattern control pattern obtained from 
/// an automation element representing a target control.
/// </param>
/// <param name="automationProperty">
/// The automation property of interest.
/// </param>
///--------------------------------------------------------------------
private object GetRangeValueProperty(
    RangeValuePattern rangeValuePattern,
    AutomationProperty automationProperty)
{
    if (rangeValuePattern == null || automationProperty == null)
    {
        throw new ArgumentException("Argument cannot be null.");
    }

    if (automationProperty.Id ==
        RangeValuePattern.MinimumProperty.Id)
    {
        return rangeValuePattern.Current.Minimum;
    }
    if (automationProperty.Id ==
        RangeValuePattern.MaximumProperty.Id)
    {
        return rangeValuePattern.Current.Maximum;
    }
    if (automationProperty.Id ==
        RangeValuePattern.SmallChangeProperty.Id)
    {
        return rangeValuePattern.Current.SmallChange;
    }
    if (automationProperty.Id ==
        RangeValuePattern.LargeChangeProperty.Id)
    {
        return rangeValuePattern.Current.LargeChange;
    }
    if (automationProperty.Id ==
        RangeValuePattern.ValueProperty.Id)
    {
        return rangeValuePattern.Current.Value;
    }
    return null;
}

'''--------------------------------------------------------------------
''' <summary>
''' Gets the current property values from target.
''' </summary>
''' <param name="rangeValuePattern">
''' A RangeValuePattern control pattern obtained from 
''' an automation element representing a target control.
''' </param>
''' <param name="automationProperty">
''' The automation property of interest.
''' </param>
'''--------------------------------------------------------------------
Private Function GetRangeValueProperty( _
ByVal rangeValuePattern As RangeValuePattern, _
ByVal automationProperty As AutomationProperty) As Object
    If (rangeValuePattern Is Nothing Or _
    automationProperty Is Nothing) Then
        Throw New ArgumentException("Argument cannot be null.")
    End If

    If automationProperty.Id = _
    rangeValuePattern.MinimumProperty.Id Then
        Return rangeValuePattern.Current.Minimum
    End If
    If automationProperty.Id = _
    rangeValuePattern.MaximumProperty.Id Then
        Return rangeValuePattern.Current.Maximum
    End If
    If automationProperty.Id = _
    rangeValuePattern.SmallChangeProperty.Id Then
        Return rangeValuePattern.Current.SmallChange
    End If
    If automationProperty.Id = _
    rangeValuePattern.LargeChangeProperty.Id Then
        Return rangeValuePattern.Current.LargeChange
    End If
    If automationProperty.Id = _
    rangeValuePattern.ValueProperty.Id Then
        Return rangeValuePattern.Current.Value
    End If
    Return Nothing

End Function 'GetRangeValueProperty

Comentarios

Este identificador lo usan las aplicaciones cliente de Automatización de la interfaz de usuario. Automatización de la interfaz de usuario proveedores deben usar el campo equivalente en RangeValuePatternIdentifiers.