C# 每次我向列表框添加项目时，它都会显示（集合）

所以我有4个类（Account.cs/Dashboard.cs/AddAccount.cs/AccountList.cs）。Dashboard.cs是我的主要表单，它包含列表框和显示方法。Account.cs设置帐户详细信息并包含ToString方法。AddAccount.cs只是将详细信息传递给Account类。然后AccountList.cs是创建列表的类

我正在努力做的是显示列表项。当我添加一个项目时，它会将其放在列表中，但显示为（集合）。如何让它显示正确的帐户名

Account.cs:

public class Account
    {
        //Set the Variable
        public string AccountName { get; set; }
        public string AccountNo { get; set; }
        public string StartingBalance { get; set; }

        public Account()
        {
            AccountName = "Account Name not inserted!";
            AccountNo = "Account Number not inserted!";
            StartingBalance = "Interest not inserted!";
        }

        public Account(string name, string accNo, string staBal)
        {
            AccountName = name;
            AccountNo = accNo;
            StartingBalance = staBal;
            System.Diagnostics.Debug.WriteLine("Account hit");
        }

        public override string ToString()
        {
            return String.Format("{0}, {1}, {2}", AccountName, AccountNo, StartingBalance);
        }
    }

    [Serializable]
    public class SavingsAcc : Account
    {

        public SavingsAcc()
        {
        }

        public SavingsAcc(string name, string accNo, string staBal) : base(name, accNo, staBal)
        {
        }

        public override string ToString()
        {
            return base.ToString() + String.Format("{0,-17}", " (Savings Account)");
        }
    }

//Gives us access to the AccountList methods
        private AccountList myAccountsList = new AccountList();

        //display the List in the list box
        void DisplayAccounts(List<Account> accounts)
        {
            list_Accounts.Items.Clear();

            //for each account in the list
            foreach (Account account in accounts)
            {
                //add the account object to the list box
                list_Accounts.Items.Add(accounts);
            }
        }

        //Add account button
        private void btn_AddAccountPage_Click(object sender, EventArgs e)
        {
            AddAccount AddAccountForm = new AddAccount();

            //Display form but only process results if OK is pressed
            if (AddAccountForm.ShowDialog() == DialogResult.OK)
            {
                Account NewAccount = AddAccountForm.GetAccountInformation();  //get new account information
                System.Diagnostics.Debug.WriteLine("Account Information:"  + NewAccount);

                //add the account to the list
                myAccountsList.AllAccounts.Add(NewAccount);

                //Display the accounts
                DisplayAccounts(myAccountsList.AllAccounts);
            }
        }

public Account GetAccountInformation()
        {
            Account a;

            if (radio_SavingsAccount.Checked)
            {
                a = new SavingsAcc(input_AccountName.Text, input_AccountNo.Text, input_StartBalance.Text);
            }
            else
            {
                a = new Account(input_AccountName.Text, input_AccountNo.Text, input_StartBalance.Text);
            }

            return a;
        }

class AccountList
    {
        private List<Account> allaccounts;
        public List<Account> AllAccounts
        {
            get { return allaccounts; }
        }

        public AccountList()
        {
            allaccounts = new List<Account>();
        }

        public void AddCurrent(Account a)
        {
            allaccounts.Add(a);
        }

    }

Dashboard.cs:

public class Account
    {
        //Set the Variable
        public string AccountName { get; set; }
        public string AccountNo { get; set; }
        public string StartingBalance { get; set; }

        public Account()
        {
            AccountName = "Account Name not inserted!";
            AccountNo = "Account Number not inserted!";
            StartingBalance = "Interest not inserted!";
        }

        public Account(string name, string accNo, string staBal)
        {
            AccountName = name;
            AccountNo = accNo;
            StartingBalance = staBal;
            System.Diagnostics.Debug.WriteLine("Account hit");
        }

        public override string ToString()
        {
            return String.Format("{0}, {1}, {2}", AccountName, AccountNo, StartingBalance);
        }
    }

    [Serializable]
    public class SavingsAcc : Account
    {

        public SavingsAcc()
        {
        }

        public SavingsAcc(string name, string accNo, string staBal) : base(name, accNo, staBal)
        {
        }

        public override string ToString()
        {
            return base.ToString() + String.Format("{0,-17}", " (Savings Account)");
        }
    }

//Gives us access to the AccountList methods
        private AccountList myAccountsList = new AccountList();

        //display the List in the list box
        void DisplayAccounts(List<Account> accounts)
        {
            list_Accounts.Items.Clear();

            //for each account in the list
            foreach (Account account in accounts)
            {
                //add the account object to the list box
                list_Accounts.Items.Add(accounts);
            }
        }

        //Add account button
        private void btn_AddAccountPage_Click(object sender, EventArgs e)
        {
            AddAccount AddAccountForm = new AddAccount();

            //Display form but only process results if OK is pressed
            if (AddAccountForm.ShowDialog() == DialogResult.OK)
            {
                Account NewAccount = AddAccountForm.GetAccountInformation();  //get new account information
                System.Diagnostics.Debug.WriteLine("Account Information:"  + NewAccount);

                //add the account to the list
                myAccountsList.AllAccounts.Add(NewAccount);

                //Display the accounts
                DisplayAccounts(myAccountsList.AllAccounts);
            }
        }

public Account GetAccountInformation()
        {
            Account a;

            if (radio_SavingsAccount.Checked)
            {
                a = new SavingsAcc(input_AccountName.Text, input_AccountNo.Text, input_StartBalance.Text);
            }
            else
            {
                a = new Account(input_AccountName.Text, input_AccountNo.Text, input_StartBalance.Text);
            }

            return a;
        }

class AccountList
    {
        private List<Account> allaccounts;
        public List<Account> AllAccounts
        {
            get { return allaccounts; }
        }

        public AccountList()
        {
            allaccounts = new List<Account>();
        }

        public void AddCurrent(Account a)
        {
            allaccounts.Add(a);
        }

    }

AccountList.cs:

public class Account
    {
        //Set the Variable
        public string AccountName { get; set; }
        public string AccountNo { get; set; }
        public string StartingBalance { get; set; }

        public Account()
        {
            AccountName = "Account Name not inserted!";
            AccountNo = "Account Number not inserted!";
            StartingBalance = "Interest not inserted!";
        }

        public Account(string name, string accNo, string staBal)
        {
            AccountName = name;
            AccountNo = accNo;
            StartingBalance = staBal;
            System.Diagnostics.Debug.WriteLine("Account hit");
        }

        public override string ToString()
        {
            return String.Format("{0}, {1}, {2}", AccountName, AccountNo, StartingBalance);
        }
    }

    [Serializable]
    public class SavingsAcc : Account
    {

        public SavingsAcc()
        {
        }

        public SavingsAcc(string name, string accNo, string staBal) : base(name, accNo, staBal)
        {
        }

        public override string ToString()
        {
            return base.ToString() + String.Format("{0,-17}", " (Savings Account)");
        }
    }

//Gives us access to the AccountList methods
        private AccountList myAccountsList = new AccountList();

        //display the List in the list box
        void DisplayAccounts(List<Account> accounts)
        {
            list_Accounts.Items.Clear();

            //for each account in the list
            foreach (Account account in accounts)
            {
                //add the account object to the list box
                list_Accounts.Items.Add(accounts);
            }
        }

        //Add account button
        private void btn_AddAccountPage_Click(object sender, EventArgs e)
        {
            AddAccount AddAccountForm = new AddAccount();

            //Display form but only process results if OK is pressed
            if (AddAccountForm.ShowDialog() == DialogResult.OK)
            {
                Account NewAccount = AddAccountForm.GetAccountInformation();  //get new account information
                System.Diagnostics.Debug.WriteLine("Account Information:"  + NewAccount);

                //add the account to the list
                myAccountsList.AllAccounts.Add(NewAccount);

                //Display the accounts
                DisplayAccounts(myAccountsList.AllAccounts);
            }
        }

public Account GetAccountInformation()
        {
            Account a;

            if (radio_SavingsAccount.Checked)
            {
                a = new SavingsAcc(input_AccountName.Text, input_AccountNo.Text, input_StartBalance.Text);
            }
            else
            {
                a = new Account(input_AccountName.Text, input_AccountNo.Text, input_StartBalance.Text);
            }

            return a;
        }

class AccountList
    {
        private List<Account> allaccounts;
        public List<Account> AllAccounts
        {
            get { return allaccounts; }
        }

        public AccountList()
        {
            allaccounts = new List<Account>();
        }

        public void AddCurrent(Account a)
        {
            allaccounts.Add(a);
        }

    }

类帐户列表
{
所有账户的私有列表；
公开列出所有帐户
{
获取{return allaccounts；}
}
公共帐户列表（）
{
allaccounts=新列表（）；
}
公共往来账户（账户a）
{
所有账目。添加（a）；
}
}

在您的

仪表板

类中，使用

帐户

的属性

帐户名

将类实例放入

列表框

的正确行，如下所示：

//for each account in the list
foreach (Account account in accounts)
{
    //add the account object to the list box
    list_Accounts.Items.Add(account.AccountName);
}

---

在您的

仪表板

类中，使用

Account

的属性

AccountName

更正将类实例放入

列表框

的行，如下所示：

//for each account in the list
foreach (Account account in accounts)
{
    //add the account object to the list box
    list_Accounts.Items.Add(account.AccountName);
}

---

您的

列表\u Accounts.Items.Add（）

行中有一个简单的输入错误。删除

帐户中的
s
，使其成为
帐户

更改：

//for each account in the list
foreach (Account account in accounts)
{
    //add the account object to the list box
    list_Accounts.Items.Add(accounts); // You're adding the entire List<> each time!
}

您的
列表\u Accounts.Items.Add（）
行中有一个简单的输入错误。删除
帐户中的
s
，使其成为
帐户

更改：

//for each account in the list
foreach (Account account in accounts)
{
    //add the account object to the list box
    list_Accounts.Items.Add(accounts); // You're adding the entire List<> each time!
}

谢谢你空闲的时间谢谢你空闲的时间谢谢你尼诺：）这不是在使用你的
ToString（）
实现；它只会显示帐户名。@Idle\u Mind OP说：“我怎样才能让它显示正确的帐户名？”，而不是
Account.ToString（）
谢谢你，尼诺：）这不是在使用
ToString（）
实现；它只会显示帐户名。@Idle\u Mind OP说：“如何让它显示正确的帐户名？”，而不是
Account.ToString（）