asp.net程序ATM

这是ASP.NET的文档using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ATM { class Bank { private List<Account> accounts; public List<Account> Accounts { get { return accounts; } set { accounts = value; } } private int currentAccountNumber; public int CurrentAccountNumber { get { return currentAccountNumber; } set { currentAccountNumber = value; } } public Bank() { accounts = new List<Account>(); } public Account OpenAccount(string password, string confirmationPassword, string name, string personId, string email, int typeOfAccount) { Account newAccount; if (!password.Equals(confirmationPassword)) { throw new InvalidOperationException("两次密码输入的不一致！"); } switch (typeOfAccount) { case 1: newAccount = new SavingAccount(password, name, personId, email); break; case 2: newAccount = new CreditAccount(password, name, personId, email); break; default:throw new ArgumentOutOfRangeException("账户类型是1到2之间的整数"); } accounts.Add(newAccount); return newAccount; } private Account GetAccountByID(long id) { foreach (Account account in accounts) { if(account.ID==id) { return account; } } return null; } public Account SignIn(long id, string password) { foreach (Account account in accounts) { if (account.ID == id && account.Password.Equals(password)) { return account; } } throw new InvalidOperationException("用户名或者密码不正确，请重试！"); } public Account Deposit(long id, double sum) { Account account = GetAccountByID(id); if (account != null) { account.Deposit(sum); return account; } throw new InvalidOperationException("非法账号！"); } public Account Withdraw(long id, double sum) { Account account = GetAccountByID(id); if (account != null) { account.Withdraw(sum); return account; } throw new InvalidOperationException("非法账号！"); } public Account SetCeiling(long id, double newCeiling) { Account account = GetAccountByID(id); try { (account as CreditAccount).Ceiling = newCeiling; return account; } catch (Exception ex) { throw new InvalidOperationException("此账户不是信用账户！"); } throw new InvalidOperationException("非法账号！"); } public double GetTotalBalance() { double totalBalance = 0; foreach (Account account in accounts) { totalBalance += account.Balance; } return totalBalance; } public double GetTotalCeiling() { double totalCeiling = 0; foreach (Account account in accounts) { if (account is CreditAccount) { totalCeiling += (account as CreditAccount).Ceiling; } } return totalCeiling; } } }