protected void btnSave_Click(object sender, EventArgs e)
    {
        cmd.CommandText = "insert into tb_description (image,description) values(@image,@description)";
        cmd.Connection = con;
        con.ConnectionString = ConfigurationManager.ConnectionStrings["cn"].ToString();
        con.Open();
        cmd.Parameters.Add("@description", SqlDbType.NVarChar, 2000).Value = TextBox2.Text;
        String Picture;
        String fp1;
        fp1 = FileUpload1.PostedFile.FileName;
        if (fp1.ToString() != "")
        {
            String fn1;
            fn1 = fp1.Substring(fp1.LastIndexOf("\\") + 1);  
            String sp1;
            sp1 = Server.MapPath("images");
            if (sp1.EndsWith("\\") == false)
            {
                sp1 += "\\";
            }
            sp1 += fn1;
            FileUpload1.PostedFile.SaveAs(sp1);
            Picture = fn1;
        }
        else
        {
            Picture = "Noimage.jpg";
        }
        cmd.Parameters.Add("@image", SqlDbType.NVarChar, 200).Value = Picture;
        cmd.ExecuteNonQuery();
    }