public CardDetails RetrieveCardDetails(string cardNumber) { var pd = new CardDetails(); try { if (string.IsNullOrEmpty(cardNumber)) { pd.response = String.Format("{0}|{1}", "Failed", "Pan has no value."); } else { string hashed_pan = PasswordHash.MD5Hash(cardNumber); var details = CardPL.RetrievePregeneratedCard(hashed_pan); if (details == null) { pd.response = String.Format("{0}|{1}", "Failed", "Pan does not exist."); } else { pd = details; pd.response = String.Format("{0}|{1}", "Success", "Pan exists."); } } } catch (Exception ex) { pd.response = String.Format("{0}|{1}", "Failed", ex.Message); ErrorHandler.WriteError(ex); } return(pd); }