RangeValuePattern.LargeChangeProperty Pole

Definice

Obor názvů:

System.Windows.Automation

Sestavení:

UIAutomationClient.dll

Identifikuje LargeChange vlastnost.

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

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

 staticval mutable LargeChangeProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly LargeChangeProperty As AutomationProperty 

Hodnota pole

AutomationProperty

Příklady

V následujícím příkladu RangeValuePattern je objekt získaný z cílového ovládacího prvku předán funkci, která načte aktuální RangeValuePattern hodnoty vlastností.

///--------------------------------------------------------------------
/// <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

Poznámky

Tento identifikátor používá model UI Automation klientských aplikací. model UI Automation poskytovatelé by měli použít ekvivalentní pole v RangeValuePatternIdentifierssouboru .

Viz také

• SmallChange