protected void Button1_Click(object sender, EventArgs e)
{
if (!checkCookie())
Response.Redirect("Login.aspx");
String orderId = Request.QueryString["orderId"].ToString();
EncryptDecrypt obj = new EncryptDecrypt();
orderId = obj.Decrypt(HttpUtility.UrlDecode(orderId));
DatabaseHandler obj1 = new DatabaseHandler();
String sellerUsername = Request.Cookies["Car-Trading"]["Username"].ToString();
DataSet ds = obj1.GetSellerId(sellerUsername);
String sellerId = ds.Tables[0].Rows[0]["SELLER_ID"].ToString();
ds = obj1.GetSellerPendingOrderInfo(orderId);
String customerId = ds.Tables[0].Rows[0]["CUSTOMER_ID"].ToString();
String carId = ds.Tables[0].Rows[0]["CAR_ID"].ToString();
String oldStock = Label5.Text;
int oldStock1 = Convert.ToInt32(oldStock);
int newStock = oldStock1-1;
String newStock1 = newStock.ToString();
obj1.DecrementCarStock(carId, newStock1);
String paymentMode = Label10.Text;
String customerAddr = Label9.Text;
String orderDate = Label11.Text;
obj1.InsertCompletedOrder(orderId, customerId, carId, sellerId, paymentMode, customerAddr, orderDate);
Label13.Visible = true;
Label13.Text = "Order Completed";
Button1.Enabled = false;
}