C#银行账户存款

本文关键字: | 更新日期: 2023-09-27 18:26:45

大家好,我有一个银行账户项目,当用户选择索引时,它会显示账户信息。此信息包括帐户的当前余额。然后我还有存款模拟,我的存款金额加起来应该是当前余额。我不明白它为什么不做这项工作。

我有这个代码,用于我选择的索引,它可以提取帐户信息。

private void accountNumComboBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (accountNumComboBox.SelectedIndex == 0)
        {

            ownerIdLabel.Text = "0001";
            balanceLabel.Text = savings1.Balance.ToString("c");
            interestLabel.Text = (string.Format("{0}%", savings1.Interest));
            interestRLabel.Text = "Interest Rate:";
        }

我有这个存款按钮的代码

    private void depositButton_Click(object sender, EventArgs e)
    {
        decimal amount;
        if (decimal.TryParse(depositTextBox.Text, out amount))
        {
            account.Deposit(amount);
            account.Balance += amount;
            depositTextBox.Clear();
        }
        else
        {
            MessageBox.Show("Pls enter valid amount.");
        }
    }

我输入的金额加起来不等于余额标签中的当前余额。文本非常感谢你的帮助。

编辑:我在我的银行账户类中也有这个

public decimal Balance
    {
        get { return _balance; }
        set { _balance = value; }
    }
    public BankAccount(decimal intialBalance, string ownerId, string accountNumber)
    {
        _balance = intialBalance;
        _customerId = ownerId;
        _accountNumber = accountNumber;
    }

    public void Deposit(decimal amount)
    {
        if ( amount>0)
        _balance += amount;
        else
            throw new Exception("Credit must be > zero");
    }
    public void Withdraw(decimal amount)
    {
        _balance -= amount;
    }

C#银行账户存款

您的存款按钮事件处理程序没有更改余额标签的代码。

private void depositButton_Click(object sender, EventArgs e)
{
    decimal amount;
    if (decimal.TryParse(depositTextBox.Text, out amount))
    {
        account.Deposit(amount);
        account.Balance += amount;
        depositTextBox.Clear();
        balanceLabel.Text = account.Balance.ToString("c"); // This line added
    }
    else
    {
        MessageBox.Show("Pls enter valid amount.");
    }
}

编辑:

使用您的代码

private BankAccount account;
private void accountNumComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
    if (accountNumComboBox.SelectedIndex == 0)
    {
           account = (BankAccount) savings1;
    }
    updateUi();
}
private void updateUi() {
    ownerIdLabel.Text = "0001";
    balanceLabel.Text = account.Balance.ToString("c");
    interestLabel.Text = (string.Format("{0}%", account.Interest));
    interestRLabel.Text = "Interest Rate:";
}
private void depositButton_Click(object sender, EventArgs e)
{
    decimal amount;
    if (decimal.TryParse(depositTextBox.Text, out amount))
    {
        account.Deposit(amount);
        account.Balance += amount;
        depositTextBox.Clear();
        balanceLabel.Text = account.Balance.ToString("c"); // This line added
    }
    else
    {
        MessageBox.Show("Pls enter valid amount.");
    }
}

注意:以上编辑是基于您给出的代码。你可能需要稍微修改一下以适应你的目标。另外,请注意,您实际上对ownerId文本进行了硬编码。

在您的存款程序中,您正在更改余额:

_balance += amount;

然而,在您的存款Button_Click例程中,您也在更改余额:

account.Deposit(amount);
account.Balance += amount;

你不需要修改这里的余额,因为存款已经可以了。

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