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Thumb.DragStarted Event

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

Namespace:  System.Windows.Controls.Primitives
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
public event DragStartedEventHandler DragStarted
<object DragStarted="DragStartedEventHandler" .../>

Identifier field

DragStartedEvent

Routing strategy

Bubbling

Delegate

DragStartedEventHandler

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

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.

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

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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