To drag image inside PictureBox

Hi,
we can drag image inside the pictureBox.
Please follow the steps one by one.

1. Place PictureBox in the form.
2. Set the following Properties for the PictureBox

• BackColor -> Transparent
• BackgroundImage->Give the image path of PNG file from your system.
• BackgroundImageLayout ->Stretch
• SizeMode -> Autosize

3. Create the Class named DraggableImage and write the following coding that
contains details about Image,Width,Height and Location.
class DraggableImage
{
public Bitmap img;
public Point Loc;
public int Width;
public int Height;
public DraggableImage(Bitmap bmpImg,Point loc)
{
this.img = bmpImg;
this.Loc = loc;
this.Width = bmpImg.Width;
this.Height = bmpImg.Height;
}
}

4. In the Form use the following coding,
public partial class Form1 : Form
{
DraggableImage di = new DraggableImage(Properties.Resources._1, new Point(0, 0));
int mx, my;
[Category("Property")]
[Description("Get and Set the draggable Image")]
public Bitmap DragImage
{
get { return di.img; }
set { di.img = value; Refresh(); }
}

public Form1()
{
InitializeComponent();
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.UserPaint, true);
this.SetStyle(ControlStyles.DoubleBuffer, true);
}

private void Form1_Load(object sender, EventArgs e)
{

this.DragImage =(Bitmap)QDOES.ImageOptimizer.ResizeToMaxSize(di.img,
pictureBox1.Width, pictureBox1.Height, 96, 96);
di.Loc = new Point(pictureBox1.Left,pictureBox1.Top);
this.MouseMove += new MouseEventHandler(Form1_MouseMove);
this.MouseDown += new MouseEventHandler(Form1_MouseDown);
this.pictureBox1.MouseDown += new MouseEventHandler(pictureBox1_MouseDown);
this.pictureBox1.MouseMove += new MouseEventHandler(pictureBox1_MouseMove);

}

private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
di.Loc.X = e.X - mx + di.Loc.X;
di.Loc.Y = e.Y - my + di.Loc.Y;
mx = e.X;
my = e.Y;
Refresh();
}
}

private void Form1_MouseDown(object sender, MouseEventArgs e)
{
mx = e.X;
my = e.Y;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (di != null)
{
e.Graphics.DrawImage(di.img, di.Loc);
}
}

private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
di.Loc.X = e.X - mx + di.Loc.X;
di.Loc.Y = e.Y - my + di.Loc.Y;
mx = e.X;
my = e.Y;
Refresh();
}
}

private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
mx = e.X;
my = e.Y;

}


}