protected void borrowBtn_Click(object sender, EventArgs e)
{
//Get data of the current trading
string index = Request.Params["pointerId"].ToString();
int indexOfTrading = int.Parse(index);
//Get id of trading
Trading currentChosen = tradings[indexOfTrading];
int tradingId = currentChosen.Id;
/*Update borrower*/
//Get id of borrower = current user in sessionId
int borrowerId = user.Id;
//Change tradingStatus to pending
currentChosen.TradingStatus = 1;
//Update borrowerId
currentChosen.BorrowerID = borrowerId;
//Update in database
TradingDAO tradingDAO = new TradingDAO();
tradingDAO.Update(tradingId, currentChosen);
//Reload page
Server.Transfer("BookDetail.aspx");
}