Question

所以，我正在处理涉及列表的类的一些代码。

我目前有这个

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;


namespace excercise_1
{
class Program
{
    static void Main(string[] args)
    {
        Card c1 = new Card("1112211", "Jhon", "Brown", "Wollongong", 2500, 1500);
        Card c2 = new Card("1111457", "Sibel", "Yilmaz", "Figtree", 3251, 3000);
        Card c3 = new Card("3333333", "Suzan", "Yilmaz", "Gywnville", 3000, 5000);
        Card c4 = new Card("4444444", "Bob", "Brown", "Balgownie", 1457, 2000);

        c1.Print();
        c2.Print();

        List<Card> Cards = new List<Card>();

        Cards.Add(c3);
        Cards.Add(c4);

     }


}

class Card

{
    public string id;
    public string first_name;
    public string family_name;
    public string suburb;
    public int postcode;
    public int balance;

    public Card (string id, string first_name, string family_name, string suburb, int postcode, int balance)
    {
        this.id = id;
        this.first_name = first_name;
        this.family_name = family_name;
        this.suburb = suburb;
        this.postcode = postcode;
        this.balance = balance;
    }

    public void Print()
    {
        Console.WriteLine(this.id);
        Console.WriteLine(this.first_name);
        Console.WriteLine(this.family_name);
        Console.WriteLine(this.suburb);
        Console.WriteLine(this.postcode);
        Console.WriteLine(this.balance);

    }
}
}

我需要能够打印名为Cards的列表。我尝试了各种各样的方法，但没有任何工作，我变得越来越沮丧。如果有人能够提供帮助，将不胜感激。

Answer 1

你可以这样做：

 Cards.ForEach(x=>x.Print());

或者像这样：

foreach (Card card in Cards)
{
    card.Print();
}

Answer 2

1）实现ToString()的覆盖像http://msdn.microsoft.com/en-us/library/ms173154(v=vs.80).aspx

一样

2）有许多方法可以像上面已经指出的那样迭代List

3）尝试向Google询问它会大大缩短您在询问和获得答案之间的时间，也许您会找到一两个指南...... like

Answer 3

为什么不使用简单的循环？

foreach(var card in Cards)
   card.Print();

顺便说一下，您可以考虑为您的班级而不是ToString方法覆盖Print。

Answer 4

只需使用Foreach进行打印。

 foreach(var card in Cards)
 {
    card.print();
 }

请： - 将所有这些公共变量设为私有。

public string id; // private
public string first_name; // private
public string family_name; // private
public string suburb; // private
public int postcode; // private
public int balance; // private

Answer 5

我不会自己编写打印方法。您可以使用TypeDescriptor。

public static void PrintList(IEnumerable<object> values)
{
    foreach (var obj in values)
    {
        string objString = "";
        foreach (PropertyDescriptor descriptor in TypeDescriptor.GetProperties(obj))
        {
            string name = descriptor.Name;
            object value = descriptor.GetValue(obj);
            objString += string.Format(" {0} = {1} ", name, value);

        }
        Console.WriteLine(objString);
    }
}

C＃打印列表

5 个答案: