Question

大约两周前，我开始学习C＃作为Web开发人员的教育的一部分。我有这个任务来创建一个充当银行的控制台应用程序。到目前为止，我可以创建一个客户，找到一个客户并显示他们的信息，帐户余额，我可以存入资金。

但我还需要能够将资金从一个帐户转移到另一个帐户，删除客户并编辑客户。现在我被困在转移资金上了。我希望你们中的某些人能够提供帮助。

我在此处上传了我的代码：https://pastebin.com/Hqyvjuuc

Program.cs的

class Program
{
    static void Main(string[] args)
    {
        ShowMainMenu();
    }

    public static void ShowMainMenu()
    {
        Console.Clear();
        Console.WriteLine("Weolcome to the Bank");
        Console.WriteLine("-------------------");
        Console.WriteLine("1: Create customer");
        Console.WriteLine("2: Show Customers");
        Console.WriteLine("-----------------");

        string command = Console.ReadLine();

        if (command == "1")
        {
            ShowCreateCustomer();
        }
        else if (command == "2")
        {
            ShowAllCustomers();
        }
    }

    public static void ShowAllCustomers()
    {
        Console.Clear();
        Console.WriteLine("-----  All Customers -----");

        foreach (Customer myCustomer in Bank.AllCustomers)
        {
            Console.WriteLine("ID: " + myCustomer.Id + " Name: " + myCustomer.Name + " Money: " + myCustomer.Money);
        }

        Console.WriteLine("-----------");
        Console.WriteLine("1: Deposit, 2: Transfer, 3: Return to main");

        string command = Console.ReadLine();

        if (command == "1")
        {
            //deposit
            //first find the customer, then deposit the amount
            Console.Write("Enter the id of the customer: ");
            string customerId = Console.ReadLine();
            Console.Write("Enter the amount to deposit: ");
            string amount = Console.ReadLine();

            //now do the magic, find the customer then increase the money
            int theCustomerId = int.Parse(customerId);
            Customer myFoundCustomer = null;

            foreach (Customer c in Bank.AllCustomers)
            {
                if (c.Id == theCustomerId)
                {
                    myFoundCustomer = c;
                    break;
                }
            }

            //we might have found it
            if (myFoundCustomer != null)
            {
                myFoundCustomer.Money += float.Parse(amount);
            }

            ShowAllCustomers();
        }
        else if (command == "2")
        {
            TransferMoney();
        }
        else if (command == "3")
        {
            ShowMainMenu();
        }
    }

    public static void ShowCreateCustomer()
    {
        Console.Clear();
        Console.WriteLine("--- Create new Customer ---");
        Console.Write("Please enter the name: ");
        string name = Console.ReadLine();
        Console.Write("Please enter the id: ");
        string id = Console.ReadLine();
        Customer customer = new Customer();
        customer.Name = name;
        customer.Id = int.Parse(id);
        //add it to the bank
        Bank.AllCustomers.Add(customer);
        //create customer etc...
        //eventually return to main menu
        ShowMainMenu();
    }

    public static void TransferMoney()
    {
        Console.Clear();
        Console.WriteLine("--- Transfer Money ---");
        Console.Write("Please enter your account's ID: ");
        string id = Console.ReadLine();
        Console.Write("Please enter the Name of the person you would like to tranfer funds to: ");
        string name = Console.ReadLine();
        Console.Write("Enter the amount of funds you would like to transfer: ");
        string amount = Console.ReadLine();

        /*
        if (id == Customer.Id()) & (name == Customer.Name())
        {
            //transfer happens here
        }
        */
        ShowAllCustomers();
    }
}

Bank.cs

public class Bank
{
    private static List<Customer> customers = new List<Customer>();

    public Bank()
    {
        customers = new List<Customer>();
    }

    public static List<Customer> AllCustomers
    {
        get { return customers; }
    }
}

Customer.cs

public class Customer
{
    public Customer()
    {
        Money = 50;
    }

    public int Id { get; set; }
    public string Name { get; set; }
    public float Money { get; set; }
}

Answer 1

你可以试试这个：

public static void TransferMoney()
{
    Console.Clear();
    Console.WriteLine("--- Transfer Money ---");
    Console.Write("Please enter your account's ID: ");
    string id = Console.ReadLine();
    Console.Write("Please enter the Name of the person you would like to tranfer funds to: ");
    string name = Console.ReadLine();
    Console.Write("Enter the amount of funds you would like to transfer: ");
    string amount = Console.ReadLine();

    foreach (Customer c in Bank.AllCustomers)
    {
           if (c.Id() == id)
           {  
               c.setMoney(c.getMoney()-amount)
           }
    } 

    foreach (Customer c in Bank.AllCustomers)
    {
           if (c.getName() == name)
           {  
               c.setMoney(c.getMoney()+amount)
           }
     }


    ShowAllCustomers();
    }
}

我希望我帮助过。好运银行任务。

祝你好运， Dimitar Georgiev

Answer 2

您需要实施以下内容：

public Customer findCustomer(int id) {
    for (int i = 0; i < Bank.AllCustomers.Count(); i++) {
        if (Bank.AllCustomers.ElementAt(i).Id == id) return Bank.AllCustomers.ElementAt(i);
    }
    return null; //Not found
}

这样可以简化您的生活，因为当您想要向给定帐户添加/减少金额，或将其删除或编辑时，您需要先找到它。

public void transfer(Customer sender, Customer receiver, float amount) {
    if ((sender != null) && (receiver != null)) {
        //Existent user
        if ((amount > 0) && (sender.Money >= amount)) {
            //Valid amount
            sender.Money -= amount;
            receiver.Money += amount;
        }
    }
}

public void transfer(int fromID, int toID, float amount) {
    Customer sender = findCustomer(fromID);
    Customer receiver = findCustomer(fromID);
    transfer(sender, receiver, amount);
}

您需要找到要编辑和删除的Customer。所有这些都有详细记录，如果您能够Customer找到Id，则应该很容易实现。

我被困在这个银行系统控制台应用程序C＃

2 个答案: