void HandleDragStarted(object sender, C1DragStartedEventArgs e)
{
var ht = flexChart.HitTest(e.GetPosition(flexChart));
if (ht.Distance < 3 && ht.X != null && ht.Y != null)
{
clickedItem = ht.Item as DataItem;
}
}
void OnDragStarted(object sender, C1DragStartedEventArgs e)
{
_position = e.GetPosition(image);
_line = new Line
{
X1 = _position.X,
Y1 = _position.Y,
X2 = _position.X,
Y2 = _position.Y,
Stroke = new SolidColorBrush(Colors.Blue),
StrokeThickness = 7,
StrokeEndLineCap = PenLineCap.Triangle,
StrokeStartLineCap = PenLineCap.Round
};
imageGrid.Children.Add(_line);
}