protected void Button2_Click(object sender, EventArgs e)
    {
        String brandName = TextBox1.Text;
        String modelName = TextBox2.Text;
        String modelNum=TextBox3.Text;
        String carYear = DropDownList2.Text;
        String carPrice = TextBox4.Text;
        String carEngine = TextBox5.Text;
        String carFuel = DropDownList1.Text;
        String frontImg = FileUpload1.PostedFile.FileName;
        String sideImg = FileUpload2.PostedFile.FileName;
        String rearImg = FileUpload3.PostedFile.FileName;
        String auctionStartTime=TextBox6.Text;
        String auctionEndTime=TextBox7.Text;

        String frontImgFolder = HttpContext.Current.Server.MapPath("~\\Car\\Front");
        String frontImgTarget = Path.Combine(frontImgFolder, frontImg);
        FileUpload1.SaveAs(frontImgTarget);

        String sideImgFolder = HttpContext.Current.Server.MapPath("~\\Car\\Side");
        String sideImgTarget = Path.Combine(sideImgFolder, sideImg);
        FileUpload2.SaveAs(sideImgTarget);

        String rearImgFolder = HttpContext.Current.Server.MapPath("~\\Car\\Rear");
        String rearImgTarget = Path.Combine(rearImgFolder, rearImg);
        FileUpload3.SaveAs(rearImgTarget);

        DatabaseHandler obj = new DatabaseHandler();
        DataSet ds = obj.GetSellerId(Request.Cookies["Car-Trading"]["Username"].ToString());
        String sellerId = ds.Tables[0].Rows[0]["SELLER_ID"].ToString();
        String carId = "CAR_" + DateTime.Now.Ticks.ToString();
        String auctionId = "AUCTION_" + DateTime.Now.Ticks.ToString();
        obj.InsertCar(carId, brandName, modelName, modelNum, "Old", carYear, carPrice, carEngine,
            carFuel, frontImgTarget, sideImgTarget, rearImgTarget);
        obj.InsertAuctionInfo(auctionId, sellerId, carId, auctionStartTime, auctionEndTime, "0");
        Label1.Text = "Car added for auction";
        TextBox1.Text = "";
        TextBox2.Text = "";
        TextBox3.Text = "";
        TextBox4.Text = "";
        TextBox5.Text = "";
        TextBox6.Text = "";
        TextBox7.Text = "";
        DropDownList1.ClearSelection();
        DropDownList2.ClearSelection();
    }