Question

我有以下3个类但由于某种原因我无法显示交易类型和金额，我也无法输出交易历史

CurrentAccount c1 = new CurrentAccount（＆＃34; 234555＆＃34;，1000,234， TransactionType.Deposit）; //不显示粗体部分

见下面的输出： 234545帐号100透支。 System.Collections.ArrayList交易记录。

如何更正我的课程以正确显示交易历史记录？

请参阅以下完整课程

abstract class BankAccount
{
    protected string AccountNumber { get; } // read property
    protected double Balance { get; set; } //read and write property

    public BankAccount(string _accountNumber)
    {
        this.AccountNumber = _accountNumber;
        this.Balance = 0;
    }

    public virtual void MakeDeposit(double amount)
    {
        Balance = Balance + amount;
    }
    public virtual void MakeWithdraw(double amount)
    {
       Balance =  Balance - amount;
    }

  }
}


class CurrentAccount : BankAccount
{
    private double OverdraftLimit { get; } // read only property    

    public ArrayList TransactionHistory = new ArrayList();

    public CurrentAccount(string AccountNumber,  double OverdraftLimit, double amount, TransactionType type) : base(AccountNumber)
    {
        this.OverdraftLimit = OverdraftLimit;

        TransactionHistory.Add(new AccountTransaction(type, amount));           
    }

    public override void MakeDeposit(double amount) // override method 
    {
        Balance += amount;
        TransactionHistory.Add(new AccountTransaction(TransactionType.Deposit, amount));
    }
    public override void MakeWithdraw(double amount)
    {            
        if (Balance + OverdraftLimit > 0)
        {
            Balance -= amount;
            TransactionHistory.Add(new AccountTransaction(TransactionType.Withdrawal, amount));
        }

        else
        {
            throw new Exception("Insufficient Funds");
        }
    }
    public override string ToString()
    {
       // print the transaction history too
        return AccountNumber + " account number " + OverdraftLimit + " overdraft." + TransactionHistory + " Transaction history.";
    }
}
}

{ 
enum TransactionType
{
    Deposit, Withdrawal
}


class AccountTransaction
{
    public TransactionType type { get; private set; }      // deposit/withdrawal
    private double Amount { get; set; }

    public AccountTransaction (TransactionType type, double _amount)
    {
        this.type = type;
        this.Amount = _amount;
    }



    public override string ToString()
    {
        return "type" + type + "amount" + Amount;
    }

}
}

class Program
{
    static void Main(string[] args)
    {
        CurrentAccount c1 = new CurrentAccount("234555",1000,  234, **TransactionType.Deposit)**; // this part is not displayed
        CurrentAccount c2 = new CurrentAccount("234534", 12000, 345, **TransactionType.Withdrawal)**; // this part is not displayed
        CurrentAccount c3 = new CurrentAccount("234545", 100,  456, **TransactionType.Withdrawal)**; // this part is not displayed
        Console.WriteLine(c1);
        Console.WriteLine(c2);
        Console.WriteLine(c3);

    }
}
}

控制台的输出： 234555帐号1000 overdraft.System.Collections.ArrayList交易记录。 234534帐号12000 overdraft.System.Collections.ArrayList交易记录。 234545帐号100 overdraft.System.Collections.ArrayList交易记录。

请帮我输出正确的信息。

Answer 1

我不知道为什么会发生这种情况，因为你有字符串方法覆盖。我唯一要做的就是你需要在银行类中覆盖tostring方法，因为你是从bank继承的。尝试一下，告诉我这是否有效。

如何在program.cs中显示字符串的完整信息？

1 个答案: