Save image(in picture box) in to a file

Question

Hi,
   I done code for free hand drawing in ASP.Net C#(Windows App).I have to store that image in DB when I clicking that button. But i don't have idea about it.Help me guys... I draw th image in picture box. The code for save button is following:

ImageFormat format = ImageFormat.Jpeg;

            SaveFileDialog sfd = new SaveFileDialog();

            sfd.Filter = "Jpeg Format(*.Jpeg)|*.Jpeg";            

            

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

            {                

                 //shapePB.Image.Save(sfd.FileName, System.Drawing.Imaging.ImageFormat.Jpeg);

                 shapePB.Image.Save(sfd.FileName, format);

                               

            }

Here shapePB is a pictureBox.

Thanks in Advance

Kavisuja.M