getter setter 和当前上下文中不存在的对象

Question

您好，我是 OOP 的新手，我现在正在做一个任务，但是我不能 link 客户 class 和反对进入我的主程序。它说它在当前上下文中不存在。这也可能是由于我不完全理解名称空间，文件目录中 class 的名称可能不正确，但老实说我不知道。

主程序（文件直接名称为MainProg）

class Program
{
    static void Main(string[] args)
    {
        //New Customer Account Sequence 

        //Customer customerOne = new Customer();

        Console.WriteLine("Customer Details:\n-----------------\n");
        Console.Write("Please enter cutomer forename: ");

        customerOne.Forename = Console.ReadLine();
        customerOne.Surname = Console.ReadLine();
        customerOne.Address = Console.ReadLine();
        customerOne.Town = Console.ReadLine();
        customerOne.Postcode = Console.ReadLine();     

        CurrentAccount accountCurrOne = new CurrentAccount();

        //accountCurrOne.AccountNumber = 1000; 

        SavingsAccount accountSavOne = new SavingsAccount();
        accountSavOne.AccountNumber = 1001;
        accountCurrOne.Open(customerOne);
        accountSavOne.Open(customerOne);

        //Initial deposit 
        decimal depositAmount;
        depositAmount = decimal.Parse(Utility.Console.Ask("Enter initial deposit: "));

        accountCurrOne.Deposit(depositAmount);
        accountSavOne.Deposit(depositAmount);

        // End of New Customer Account Sequence 
        Console.ReadLine();
    }
}

客户Class（文件目录中的名称是CustomerOne）

class CustomerOne : BankAccount
{
    protected string _Forename;
    protected string _Surname;
    protected string _Address;
    protected string _Town;
    protected string _Postcode;

    public string Forename
    {
        get { return _Forename; }
        set { Forename = value; }
    }

    public string Surname
    {
        get { return _Surname; }
        set { Surname = value; }
    }

    public string Address
    {
        get { return _Address; }
        set { Address = value; }
    }

    public string Town
    {
        get { return _Town; }
        set { Town = value; }
    }

    public string Postcode
    {
        get { return _Postcode; }
        set { Postcode = value; }
    }
}

谁能告诉我哪里搞砸了？

Answer 1

为了调用一个对象的属性和方法，您必须实例化它。问题是您评论的以下行：

//Customer customerOne = new Customer();

此行创建了客户的新实例 class。使用关键字 new 创建实例并将其分配给 variable 后，您可以使用 variable.Property 或 variable.Method() 调用 class 方法和属性。这适用于非静态的 classes。

实例参考：https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/objects

getter setter 和当前上下文中不存在的对象

getter setter and objects not existing in the current context

c#

oop

getter-setter