How to save and retrive image from/to picture box

Question

hi.

i have selected the image using openfiledialog and loaded it to the picturebox in c# desktop app.

now i want to save the image, while saving the image it raises the exception that [] , these brackets are invalid parameters.

my code is.

MemoryStream stream=new MemoryStream();
pictureBox1.Image.Save(stream,System.Drawing.Imaging.ImageFormat.Jpeg);
  pic=stream.ToArray();


here pic is of byte[] type. which is class level variable.

then i store pic in insert query like this.

 string str = "insert into branches (branchcode,branchname,address,landlinecell,picture,description) values(" + branchcode + ",'" + branchname + "','" + address + "','" + landline + "'," + @pic+ ",'" + description + "')";

and then send the query to my save method to do the insertion operation.

what is the problem??