public int TransferNull(double?amount, string name, string email)
        {
            Transfer_Database Tran_DB = new Transfer_Database();

            if (amount == null)
            {
                return(0);
            }
            else
            {
                return(1);
            }
        }
        public double TransferTaka(double amount, string name, string email)
        {
            Transfer_Database Tran_DB = new Transfer_Database();

            return(Tran_DB.Tran_DB(amount, name, email));
        }