Code Behind in Controller
string _pckdate = Convert.ToDateTime(Request.Form["txtpickupdate"]).ToShortDateString() + " " + Convert.ToDateTime(Request.Form["txtpickuptime"]).ToShortTimeString();
adbook.pickupdate_ = DateTime.ParseExact(_pckdate, "MM/dd/yyyy HH:mm tt", System.Globalization.CultureInfo.InvariantCulture);
it will shows an error: "String was not recognized as a valid DateTime “ format dd/MM/yyyy”?"