How I can drag and drop the images on a canvas dynamically

                                                             void Stickers1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{

    var selecteditem = e.AddedItems[0] as StickersImageListModel;

    {
        Stickers1.Visibility = Visibility.Collapsed;
        Image imageitem = new Image();
        BitmapImage image = new BitmapImage(new                             System.Uri(selecteditem.Imageurl, UriKind.Absolute));
        imageitem.Source = image;
        my_canvas.Children.Add(imageitem);
        imageitem.AllowDrop = true;
    }
    my_canvas.Visibility = Visibility.Visible;
}

class StickersDisplayed
{
    public int id { get; set; }
    public string Imageurl { get; set; }
}

private void my_canvas_ManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e)

{


    if ((e.Position.X > Canvas.GetLeft(_img) && e.Position.X < Canvas.GetLeft(_img) + _img.Width)
       || (e.Position.Y > Canvas.GetTop(_img) && e.Position.Y < Canvas.GetTop(_img) + _img.Height))
    {
        {
            Canvas.SetLeft(_img, e.Position.X);
            Canvas.SetTop(_img, e.Position.Y);
        }
    }
}