how to retrieve images from sql database in asp.net

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ASP.NET

hi every one;
i am beginners in asp.net.
here i have a problem is that:
I have two webfrom in one form i upload images in database. That is uploaded successfully.
in 2nd form i have one image button and one image box. I want that when user click image button then new uploaded image is displayed in image box.
in other words i want to know how to retrieve images from database and display in image box.
please give me some hints as soon as possible;
thanks in advance.

here is my image upload code:

SqlConnection con = new SqlConnection(@"connection string");
        SqlCommand com;
        photo phobj=new photo();
        protected void btnsubmit_Click1(object sender, EventArgs e)
        {
            if (FileUpload1.HasFile)
            {
                String filename = FileUpload1.PostedFile.FileName;
                String FileExtension = Path.GetExtension(filename).ToLower();
                String[] ExtesionAllowed = { ".png", ".gif" };
                if (FileExtension.Contains(Path.GetExtension(filename).ToLower()))
                {
                    try
                    {
                        String FileSavePath = Server.MapPath("~/Photos/");
                        FileUpload1.PostedFile.SaveAs(FileSavePath + FileUpload1.PostedFile.FileName);

                    }
                    catch (Exception)
                    {
                        lblmsg.Text = "unable to upload.";
                    }
                }
                else
                {
                    lblmsg.Text = "File Extension " + Path.GetExtension(filename).ToLower() + " is not allowed";
                }

                phobj.url = Path.GetFileName(filename);
                phobj.alpha = drp_name.SelectedItem.Text.ToString();
                phobj.message = txtname.Text;
                con.Open();
                string query = "Insert Into Images(url,name,message)Values('" + phobj.url + "','" + phobj.alpha + "','" + phobj.message + "')";
                com = new SqlCommand(query, con);
                if (com.ExecuteNonQuery() > 0)
                {
                    lblmsg.Text = "Images Submited";
                }
            }
                else
                {
                    lblmsg.Text = "Operation Failed...please try again...";
                }
                con.Close();
            
        }