public IinputReader Reader(string readerChoice)
        {
            IinputReader reader = null;
               switch (readerChoice)
               {
               case "xml":
                   reader = new xmlRead();
                   break;
               case "json":
                   reader = new jsonRead();
                   break;
               default:
                   break;
               }

               return reader;
        }
        public IinputReader Reader(string readerChoice)
        {
            IinputReader reader = null;

            switch (readerChoice)
            {
            case "xml":
                reader = new xmlRead();
                break;

            case "json":
                reader = new jsonRead();
                break;

            default:
                break;
            }

            return(reader);
        }