protected void btnAddToCart_Click(object sender, EventArgs e)
    {
        if (Session["user"].ToString().Equals("Guest"))
        {
            Session["previous"] = "~/OneProduct.aspx";
            Response.Redirect("~/login.aspx");
        }
        else
        {
            Session["previous"] = "~/OneProduct.aspx";
            string pimgurl = smaalimg;
            string pname   = this.lblPname.Text;
            string uname   = Session["user"].ToString();
            string pprice  = this.lblPprice.Text;
            double apprice = System.Convert.ToDouble(pprice);

            string quantity  = DropDownList1.SelectedItem.ToString();
            int    aQuantity = System.Convert.ToInt32(quantity);

            bool status = dba.addProductToCart(uname, pimgurl, pname, apprice, aQuantity);
            if (status)
            {
                lbllError.Visible = true;
                lbllError.Text    = pname + " add to the cart Successfully !";
            }
            else
            {
                lbllError.Visible = true;
                lbllError.Text    = pname + " already in the cart !";
            }
        }
    }