Question

我正在使用Visual Studio 2015，我正在练习C＃。用户输入信息后，如何在控制台上显示列表？我可能做错了，我还在学习C＃。一旦我输入了所有信息，我如何让控制台显示收集的信息？我有一个总收入的固定数字，我不知道如何更改它，以便用户可以输入任何数字并计算它，（仍然在努力）任何建议，链接，视频是受欢迎的。我正在看一些复数教程，但似乎没有显示如何做到这一点。

//My first program 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PracticeProgram
{
   public class Program
   {
    public static void Main(string[] args)
    {
        List<Person> myContacts = new List<Person>();

        //You could loop to collect developers data
        for (int i = 0; i < 4; i++)
        {
            Console.WriteLine("Welcome developer, enter your name to continue");
            string name = Console.ReadLine();
            Console.WriteLine("Hello, " + name);

            Console.WriteLine("enter your address");
            string address = Console.ReadLine();
            Console.WriteLine(address);

            Console.WriteLine("enter your monthly income");
            double GrossMonthlyPay = 10000;
            Console.WriteLine(GrossMonthlyPay);

            Console.WriteLine("your tax deduction set at 7% is ");
            double taxes = (0.07);
            Console.WriteLine(taxes = GrossMonthlyPay * taxes);

            Console.Write("\nPress any key to continue...");
            Console.ReadLine();

            myContacts.Add(new Person(name, address, GrossMonthlyPay, taxes));
        }

    }
}

internal class Person
{
    private string address;
    private double grossMonthlyPay;
    private string name;
    private double taxes;

    public Person(string name, string address, double grossMonthlyPay, double taxes)
    {
        this.name = name;
        this.address = address;
        this.grossMonthlyPay = grossMonthlyPay;
        this.taxes = taxes;
    }

    internal static Person ReadFromCSV(string line)
    {
        throw new NotImplementedException();
    }

    internal void SerializeToCSV(string v)
    {
        throw new NotImplementedException();
    }
}

}

Answer 1

如果要显示某个集合，则需要使用 foreach 或 for loop

来循环显示它们

foreach (Person element in myContacts)
{
    System.Console.WriteLine(element.name);
    ....
    etc
}

Answer 2

我建议你覆盖Person的ToString（）方法。这样，无论您想要显示Person的字符串表示，它都会显示相同的内容：

internal class Person
{
    private string address;
    private double grossMonthlyPay;
    private string name;
    private double taxes;

    public Person(string name, string address, double grossMonthlyPay, double taxes)
    {
        this.name = name;
        this.address = address;
        this.grossMonthlyPay = grossMonthlyPay;
        this.taxes = taxes;
    }

    public override string ToString()
    {
        return "Name=" + this.name + ",Address =" + this.address + " Monthly Pay=" + this.grossMonthlyPay + " Taxes=" + this.taxes.ToString();
    }

    internal static Person ReadFromCSV(string line)
    {
        throw new NotImplementedException();
    }

    internal void SerializeToCSV(string v)
    {
        throw new NotImplementedException();
    }
}

Answer 3

至于从用户那里获得每月工资总额，我相信你可以使用与获取名字相同的方法。

string GrossMonthlyPayInput = Console.ReadLine();
double GrossMonthlyPay = 0;

大多数情况下，您可能希望确保只使用数字以便您可以使用解析，请点击以下链接：Float/Double type input validation in C#或从此处https://social.msdn.microsoft.com/Forums/windows/en-US/84990ad2-5046-472b-b103-f862bfcd5dbc/how-to-check-string-is-number-or-not-in-c?forum=winforms

类似于：

if (double.TryParse(GrossMonthlyPayInput, out j))
    GrossMonthlyPay = double.Parse(GrossMonthlyPayInput);
else
    Console.WriteLine("Please Input numbers only");

我还没有尝试过这个代码，如果我误解了你的问题，我可能不会很好地回答你的问题所以我先道歉，因为我也是C＃的新手。

如何使用c＃在控制台上显示列表

3 个答案: