SelectionPattern.SelectionPatternInformation.CanSelectMultiple Özellik
Tanım
Önemli
Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.
Kapsayıcının eşzamanlı olarak birden fazla alt öğenin seçilmesine izin verip vermediğini belirten bir değer alır.
public:
property bool CanSelectMultiple { bool get(); };
public bool CanSelectMultiple { get; }
member this.CanSelectMultiple : bool
Public ReadOnly Property CanSelectMultiple As Boolean
Özellik Değeri
true
denetim birden çok seçimi destekliyorsa; aksi takdirde false
.
Örnekler
Aşağıdaki örnekte, bir SelectionPattern denetim deseni elde edilir AutomationElement ve daha sonra özellik değerlerini almak için kullanılır.
///--------------------------------------------------------------------
/// <summary>
/// Obtains a SelectionPattern control pattern from an
/// automation element.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
/// <returns>
/// A SelectionPattern object.
/// </returns>
///--------------------------------------------------------------------
private SelectionPattern GetSelectionPattern(
AutomationElement targetControl)
{
SelectionPattern selectionPattern = null;
try
{
selectionPattern =
targetControl.GetCurrentPattern(SelectionPattern.Pattern)
as SelectionPattern;
}
// Object doesn't support the SelectionPattern control pattern
catch (InvalidOperationException)
{
return null;
}
return selectionPattern;
}
'''--------------------------------------------------------------------
''' <summary>
''' Obtains a SelectionPattern control pattern from an
''' automation element.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <returns>
''' A SelectionPattern object.
''' </returns>
'''--------------------------------------------------------------------
Private Function GetSelectionPattern( _
ByVal targetControl As AutomationElement) As SelectionPattern
Dim selectionPattern As SelectionPattern = Nothing
Try
selectionPattern = DirectCast( _
targetControl.GetCurrentPattern(selectionPattern.Pattern), _
SelectionPattern)
' Object doesn't support the SelectionPattern control pattern
Catch
Return Nothing
End Try
Return selectionPattern
End Function 'GetSelectionPattern
///--------------------------------------------------------------------
/// <summary>
/// Gets the current property values from target.
/// </summary>
/// <param name="selectionPattern">
/// A SelectionPattern control pattern obtained from
/// an automation element representing the selection control.
/// </param>
/// <param name="automationProperty">
/// The automation property of interest.
/// </param>
///--------------------------------------------------------------------
private bool GetSelectionObjectProperty(
SelectionPattern selectionPattern,
AutomationProperty automationProperty)
{
if (automationProperty.Id ==
SelectionPattern.CanSelectMultipleProperty.Id)
{
return selectionPattern.Current.CanSelectMultiple;
}
if (automationProperty.Id ==
SelectionPattern.IsSelectionRequiredProperty.Id)
{
return selectionPattern.Current.IsSelectionRequired;
}
return false;
}
'''--------------------------------------------------------------------
''' <summary>
''' Gets the current property values from target.
''' </summary>
''' <param name="selectionPattern">
''' A SelectionPattern control pattern obtained from
''' an automation element representing the selection control.
''' </param>
''' <param name="automationProperty">
''' The automation property of interest.
''' </param>
'''--------------------------------------------------------------------
Private Function GetSelectionObjectProperty( _
ByVal selectionPattern As SelectionPattern, _
ByVal automationProperty As AutomationProperty) As Boolean
If automationProperty.Id = _
selectionPattern.CanSelectMultipleProperty.Id Then
Return selectionPattern.Current.CanSelectMultiple
End If
If automationProperty.Id = _
selectionPattern.IsSelectionRequiredProperty.Id Then
Return selectionPattern.Current.IsSelectionRequired
End If
Return False
End Function 'GetSelectionObjectProperty
Açıklamalar
Bu özellik dinamik olabilir Örneğin, nadir durumlarda, bir denetim başlatma sırasında birden çok öğenin seçilmesine izin verebilir, ancak daha sonra yalnızca tek seçimlerin yapılmasına izin verebilir.