Thumb.DragStarted Event

Definition

Occurs when a Thumb control receives logical focus and mouse capture.

C#
public event System.Windows.Controls.Primitives.DragStartedEventHandler DragStarted;

Event Type

Examples

The following example shows how to assign an event handler for the DragStarted event to a Thumb control, and how to define the event handler. For the complete sample, see Thumb Drag Functionality Sample.

XAML
<Thumb Name="myThumb" Canvas.Left="80" Canvas.Top="80" Background="Blue" 
      Width="20" Height="20" DragDelta="onDragDelta" 
      DragStarted="onDragStarted" DragCompleted="onDragCompleted"
      />
C#
void onDragStarted(object sender, DragStartedEventArgs e)
{
    myThumb.Background = Brushes.Orange;
}

Remarks

The Thumb control receives focus and mouse capture when the user presses the left mouse button while pausing the mouse pointer over the Thumb.

Routed Event Information

Item Value
Identifier field DragStartedEvent
Routing strategy Bubbling
Delegate DragStartedEventHandler

Applies to

Product Versions
.NET Framework 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

See also