protected void Page_Load(object sender, EventArgs e)
{
string quoteNo;
if(!IsPostBack)
{
quoteNo = Convert.ToString(Session["QuoteNo"]);
if(string.IsNullOrEmpty(quoteNo)){
quoteNo = GenerateQuoteNo();
Session["QuoteNo"] = quoteNo;
}
}
else
{
quoteNo = Convert.ToString(Session["QuoteNo"]);
}
}