C#：有沒有辦法在您在控制台 window 的列表中輸入內容后從上到下返回一個帶逗號的並排數組？

Question

我是 C# 的新手。這是我的代碼。 當我運行這段代碼時，我將汽車名稱、里程、年份、品牌、model、顏色和車身類型輸入到如下所示的列表中

 Name of Car: Car 1
 Enter Mileage: 4000 (my input)
 Enter year: 2022 (my input)
 Enter make: ford (my input, etc.)
 Enter model: fusion
 Enter color: red
 Enter bodytype: coupe
 Name of Car: Car 2 
 Enter Mileage: 4000
 Enter year: 2022
 Enter make: ford
 Enter model: fusion
 Enter color: red
 Enter bodytype: coupe
 Name of Car: Car 3 
 Enter Mileage: 4000
 Enter year: 2022
 Enter make: ford
 Enter model: fusion
 Enter color: red
 Enter bodytype: coupe

我想將我為汽車 1、汽車 2、汽車 3 輸入的內容返回為三個並排的 arrays，逗號如下所示？

car 1, 4000, 2022, ford, fusion, red, coupe
car 2, 4000, 2022, ford, fusion, red, coupe
car 3, 4000, 2022, ford, fusion, red coupe

下面是我寫的代碼，在這段代碼的最后是我想並排打印 arrays 的地方。應用對象和方法的概念，我應該寫什么才能在控制台上並排打印數組 window ？

using System;
using System.Management.Instrumentation;
using Assignment5;

namespace Assignment5
{
    public class Car
    {
        //public:
        public void Set_Name_of_Car(string name)
        {
            name_of_car = name;
        }

        public void Set_Body_Type(string Type) //methods that you can call 
        {
            bodytype = Type; 
        }

        public void Set_Make(string Color, string Make, string Model )
        {
            color = Color;
            make = Make;
            model = Model;
        }

        public void Set_Mileage(int Mileage, int Year)
        {
            mileage = Mileage;
            year = Year; 
        }

        public void Show()
        {
            Console.WriteLine();
            Console.WriteLine();
            Console.WriteLine();
        }
    }

}

namespace Program
{ 
    internal class Program
    {
        static void Main(string[] args)
        {
                Car car1 = carInfo();
                Car car2 = carInfo();
                Car car3 = carInfo();
        }

        public static Car  carInfo()
        {
            Console.WriteLine("Enter Name of Car: ");
            string n_Aim = Console.ReadLine();
            Console.WriteLine("Enter Mileage:");
            int miles = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Enter Year:");
            int yr = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Enter Make:");
            string meigh_k = Console.ReadLine();
            Console.WriteLine("Enter Model:");
            string mod_L = Console.ReadLine();
            Console.WriteLine("Enter Color:");
            string Col_R = Console.ReadLine();
            Console.WriteLine("Enter Bodytype: ");
            string Bdy_Typ = Console.ReadLine();

            Car inputcar = new Car();
            inputcar.Set_Name_of_Car(n_Aim); 
            inputcar.Set_Mileage(miles, yr);
            inputcar.Set_Make(Col_R, meigh_k, mod_L); 
            inputcar.Set_Body_Type(Bdy_Typ);
            return inputcar;
        }
    }
}

我想嘗試的是使用，但我認為我的導師不希望我們使用該方法，因為它太簡單了。 請問您還有其他建議嗎？ 謝謝你：D

Console.WriteLine("car 1, 4000, 2022, ford, fusion, red, coupe");
Console.WriteLine("car 2, 4000, 2022, ford, fusion, red, coupe");
Console.WriteLine("car 3, 4000, 2022, ford, fusion, red coupe");

Answer 1

為所述 class 覆蓋 tostring function

namespace Assignment5
{
    public class Car
    {
        //public:
        public void Set_Name_of_Car(string name)
        {
            name_of_car = name;
        }
        public void Set_Body_Type(string Type) //methods that you can call 
        {
            bodytype = Type; 
        }

        public void Set_Make(string Color, string Make, string Model )
        {
            color = Color;
            make = Make;
            model = Model;
        }

        public void Set_Mileage(int Mileage, int Year)
        {
            mileage = Mileage;
            year = Year; 
        }

        public void Show()
        {
            Console.WriteLine();
            Console.WriteLine();
            Console.WriteLine();
        }

        public override string ToString()
        {
           return name_of_car + ", " + mileage + ", " + year + ", " + make +  ", " + model +  ", " + color + ", " + bodytype 
        }
    }
    
}

然后只打印每輛車的字符串

static void Main(string[] args)
        {
                Car car1 = carInfo();
                Car car2 = carInfo();
                Car car3 = carInfo();
                Console.WriteLine(car1.ToString());
                Console.WriteLine(car2.ToString());
                Console.WriteLine(car3.ToString());
        }

您也可以這樣做，因為它會自動調用 ToString 方法

static void Main(string[] args)
        {
                Car car1 = carInfo();
                Car car2 = carInfo();
                Car car3 = carInfo();
                Console.WriteLine(car1);
                Console.WriteLine(car2);
                Console.WriteLine(car3);
        }

Answer 2

可以覆蓋每個class繼承自object的Car的ToString方法，讓汽車顯示自己。 在class這輛車中，添加這個方法：

public override string ToString()
{
    return $"{name_of_car}, {mileage}, {year}, {make}, {model}, {color}, {bodytype}";
}

您還最好將汽車添加到列表中。 這簡化了汽車的處理，因為您現在可以輕松處理任意數量的汽車，而無需添加更多汽車變量。

var cars = new List<Car>();
cars.Add(carInfo());
cars.Add(carInfo());
cars.Add(carInfo());

foreach (Car car in cars) {
    Console.WriteLine(car);
}

請注意， Console.WriteLine自動使用ToString方法來顯示任何對象。

不再需要Car中的Show方法。 輸入/輸出（ Console.ReadLine/WriteLine ）應該在數據 class 中完成。

您還可以讓用戶輸入汽車，直到他在不輸入名稱的情況下按Enter 。 為此，從輸入法返回null ：

public static Car  carInfo()
{
    Console.WriteLine("Enter Name of Car: ");
    string n_Aim = Console.ReadLine();
    if (n_Aim = "") {
        return null;
    }
    Console.WriteLine("Enter Mileage:");
    ...
}

然后

var cars = new List<Car>();
while (true) {
    Car car = carInfo();
    if (car == null) {
        break; // Exit the loop
    }
    cars.Add(carInfo());
}

foreach (Car car in cars) {
    Console.WriteLine(car);
}