Question

希望我正确地描述这一点并且足够清楚。我正在尝试保存用户输入的多个详细信息并将其保存到列表中。但是，我这样做的当前方式只是保存对象类型/名称而不是数据。下面是我的代码如何保存对象数据而不是对象的名称？

Student stud = new Student();
stud.Enter_Student();
_studentList.Add(stud);

输入学生

class Student : Person
{
    public string StudentId { get; private set; }
    public string Subject { get; private set; }

    //string[] _studentdb = new string[4];

    public Student()
    {
        StudentId = "abc123";
        Subject = "Building Subject";
    }

    public void Enter_Student()
    {
            this.Person_Prompt_Print(); //Prompts for user
            this.Address_Prompt_Print();
            this.Contact_Prompt_Print();
            Console.SetCursorPosition(4, 18);
            Console.WriteLine("Student ID:");

            this.Enter_Person(); // Inputs from user
            this.Enter_Address();
            this.Enter_Contacts();
            StudentId = Console.ReadLine();
            Console.SetCursorPosition(30, 18);
    }
}

来自人类的日期样本

class Person
{

    Tidyup tidy = new Tidyup();

    public string FirstName { get; private set; }
    public string Surname { get; private set; }
    public string MiddleName { get; private set; }
    public string AddressLine1 { get; private set; }
    public string AddressLine2 { get; private set; }
    public string Town { get; private set; }
    public string Postcode { get; private set; }
    public string Email { get; private set; }
    public string Telephone { get; private set; }



    public Person()
    {
        FirstName = "Name";
        Surname = "Surname";
        MiddleName = "Middle Name";
        AddressLine1 = "Address";
        AddressLine2 = "Address Ln2";
        Town = "Town";
        Postcode = "<xxx>/<xxx>";
        Email = "name@buildright.ac.uk";
        Telephone = "0800 0000000";
    }

    public void Person_Prompt_Print()
    {
        // Program Frame
        tidy.Line_Top();
        tidy.Line_Base();
        tidy.Sides_Left();
        tidy.Sides_Right();

        Console.SetCursorPosition(4, 2); //Prompts for user
        Console.WriteLine("FirstName:");
        Console.SetCursorPosition(4, 4);
        Console.WriteLine("Surname:");
        Console.SetCursorPosition(4, 6);
        Console.WriteLine("Middle Name:");
    }

    public void Address_Prompt_Print()
    {
        Console.SetCursorPosition(4, 8); //Prompts for user
        Console.WriteLine("House Number/Name:");
        Console.SetCursorPosition(4, 10);
        Console.WriteLine("Street:");
        Console.SetCursorPosition(4, 12);
        Console.WriteLine("Town:");
        Console.SetCursorPosition(4, 14);
        Console.WriteLine("Post Code:");
    }

    public void Contact_Prompt_Print()
    {
        Console.SetCursorPosition(4, 16);
        Console.WriteLine("Email:");
        Console.SetCursorPosition(4, 18);
        Console.WriteLine("Telephone:");
    }

    public void Enter_Person()
    {

        Console.SetCursorPosition(30, 2); // Inputs from user
        FirstName = Console.ReadLine();
        Console.SetCursorPosition(30, 4);
        Surname = Console.ReadLine();
        Console.SetCursorPosition(30, 6);
        MiddleName = Console.ReadLine();
    }

    public void Enter_Address()
    {

        Console.SetCursorPosition(30, 8);  // Inputs from user
        AddressLine1 = Console.ReadLine();
        Console.SetCursorPosition(30, 10);
        AddressLine2 = Console.ReadLine();
        Console.SetCursorPosition(30, 12);
        Town = Console.ReadLine();
        Console.SetCursorPosition(30, 14);
        Postcode = Console.ReadLine();
    }

    public void Enter_Contacts()
    {
        Console.SetCursorPosition(30, 16);
        Email = Console.ReadLine();
        Console.SetCursorPosition(30, 18);
        Telephone = Console.ReadLine();
    }

} // End of Class

最后我通过一个简单的嵌套foreach循环打印出来

public void Print_all_student()
{
    Console.Clear();

    foreach (Student t in _studentList)
    {
        // print another list items.
        foreach (Student t1 in _studentList)
        {
            Console.WriteLine("/" + t + "/" + t1);
        }
    }
    Console.ReadKey();
}

如果有人可以帮助我理解我所缺少的内容以及如何访问打印出来的数据，我将不胜感激。提前感谢您提供任何帮助。

Answer 1

此处存在很多问题，但在Console.WriteLine来电中，您只显示Student类型，因此ToString类型上的Student方法将是invoked，默认情况下会显示类型名称。

您想要显示Student类型的各个属性，例如

foreach (Student student in studentList)
{
    Console.WriteLine(student.FirstName);
    Console.WriteLine(student.Surname);
    // etc
}

请注意，Student来自Person，因此可以从Student引用访问所有公共属性，因为Student是Person。< / p>

此外：

你有一个冗余循环 - 你只需要一个枚举studentList
这里有一个真正混合的问题。您的Student和Person类型不应关注用户界面（即与Console来电有关的任何内容）
坚持使用PascalCase（又名UpperCamelCase）作为您的方法名称，没有下划线

将对象的内容添加到列表而不是参数类型？

1 个答案: