Problem about pictureBox in Visual Studio C Sharp.NET ?

Hi,
follwing code solve just half problem................means save only last ellipse ,but i want whole drawing

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private void pictureBox2_MouseDown(object sender, MouseEventArgs e)

        {  

            if (e.Button == MouseButtons.Left)

            {

Bitmap bmp = new Bitmap(pictureBox2.Width, pictureBox2.Height);

 

Graphics g = Graphics.FromImage(bmp);

 

Pen p = new Pen(Color.Red, 5);

 

g.DrawEllipse(p, e.X, e.Y, 5, 7);

           }

---------------------------------------------------------------

and then ......... ... .

 

if (saveFileDialog1.ShowDialog() == DialogResult.OK)

            {

pictureBox2.Image = bmp;

 

pictureBox2.Image.Save(saveFileDialog1.FileName);

             }

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i think, there is something missing in

Graphics g = Graphics.FromImage(bmp);

or

pictureBox2.Image = bmp; 

(like: pictureBox2.Image += bmp; but illegal )

-----------------------------------------------------------------

bmp or pictureBox does not update with previous condition

it always  losing the previous ellipse and save the last drawn

ellipse

thanks.............you are right

See if this will work:

Bitmap bmp = new Bitmap(pictureBox2.Width, pictureBox2.Height);
Graphics g = Graphics.FromImage(bmp);
Pen p = new Pen(Color.Red, 5);
g.DrawEllipse(p, e.X, e.Y, 5, 7);
pictureBox2.Image = bmp;