SelectionChanging Event

InkCanvas.SelectionChanging Event

Occurs when a new set of ink strokes and/or elements is being selected.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

Public Event SelectionChanging As InkCanvasSelectionChangingEventHandler
Dim instance As InkCanvas 
Dim handler As InkCanvasSelectionChangingEventHandler 

AddHandler instance.SelectionChanging, handler
<object SelectionChanging="InkCanvasSelectionChangingEventHandler" .../>

The SelectionChanging event is raised when strokes and/or elements are selected by the user - but before the change is applied.

The SelectionChanging event is processed when the InkCanvasSelectionChangingEventHandler receives an InkCanvasSelectionChangingEventArgs object. InkCanvasSelectionChangingEventArgs provides methods for accessing FrameworkElement and StrokeCollection objects after they are selected by the user.

After the change is applied, the SelectionChanged event is raised.


The SelectionChanging event does not occur when the selected strokes are deleted or when the ActiveEditingMode property changes.

The following example makes selected strokes royal blue.

Private Sub inkCanvas1_SelectionChanging(ByVal sender As Object, _
                                 ByVal e As InkCanvasSelectionChangingEventArgs)

    Dim selectedStrokes As StrokeCollection = e.GetSelectedStrokes()

    Dim aStroke As Stroke
    For Each aStroke In inkCanvas1.Strokes
        If selectedStrokes.Contains(aStroke) Then
            aStroke.DrawingAttributes.Color = Colors.RoyalBlue
            aStroke.DrawingAttributes.Color = inkCanvas1.DefaultDrawingAttributes.Color
        End If 
    Next aStroke

End Sub 'inkCanvas1_SelectionChanging

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0

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