protected void LoadBooking() { myDAL obj = new myDAL(); if ((string)Session["sender"] == "Airline") { BookingGrid.DataSource = obj.getBookingsAir(); Session["sender"] = "null"; } if ((string)Session["sender"] == "Train") { BookingGrid.DataSource = obj.getBookingsTrain(); Session["sender"] = "null"; } if ((string)Session["sender"] == "Cinema") { BookingGrid.DataSource = obj.getBookingsCinema(); Session["sender"] = "null"; } BookingGrid.DataBind(); }