protected void LinkButton1_Click(object sender, EventArgs e)
{
if (!checkCookie())
Response.Redirect("Login.aspx");
String customerUsername = Request.Cookies["Car-Trading"]["Username"].ToString();
DatabaseHandler obj=new DatabaseHandler();
DataSet ds=obj.GetCustomerId(customerUsername);
String customerId = ds.Tables[0].Rows[0]["CUSTOMER_ID"].ToString();
EncryptDecrypt obj1 = new EncryptDecrypt();
customerId = HttpUtility.UrlEncode(obj1.Encrypt(customerId));
Response.Redirect("CustomerBuyCar.aspx?carId=" + Request.QueryString["carId"].ToString() + "&sellerId=" + Request.QueryString["sellerId"].ToString() + "&customerId=" + customerId);
}