/// <summary>
/// Handle the MouseLeftButtonDown event for the UIElement to start a drag operation
/// </summary>
private void TargetElement_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
_start = e.GetPosition(_targetElement);
_draggingActive = _targetElement.CaptureMouse();
// Only start the drag operation if CaptureMouse succeeded
if (_draggingActive)
{
OnDragStarted();
}
}
