重写的ToString方法C＃ [英] Override .ToString method c#

问题描述

好了，所以我写了这个程序了C＃编程的书（我想在这里学习）的行使，并要求覆盖的ToString（）方法返回的成员<所有数据/强>

让我正确地做到了这一点？还是我刚刚成功地写道：编译但不执行任何代码。是什么目的的ToString

我已经花了约30分钟，看着就这个问题和没有带其他职位想通了，所以我决定把这个

 使用系统; 
使用System.Collections.Generic; 
使用System.Linq的; 
使用System.Text; 
 
命名空间ConsoleApplication297 
 {
类节目
 {
静态无效的主要（字串[] args）
 {
字符串名称=冲锋队; 
的Employee =新员工（名）; 
 Console.WriteLine（类型租金是{0}，s.Name）; 
 Console.WriteLine（识别号码是{0}，s.Number）; 
 Console.WriteLine（租用的日期是{0} ABY，s.Date）; 
 Console.WriteLine（标准工资银河系是... {0：C}，s.Salary）; 
 
} 
 
类员工
 {
私人字符串_name; 
私人字符串_number; 
私人诠释_date; 
私人诠释_salary; 
公共字符串名称
 {
得到
 {
返回_name; 
} 
} 
 
公共串号
 {
得到
 {
返回_number; 
} 
} 
 
公众诠释日期
 {
得到
 {
返回_date; 
} 
} 
公众诠释工资
 {
得到
 {
返回_salary; 
} 
} 
公务员（字符串n）
 {
 _name = N; 
 _number =AA23TK421; 
 _date = 4; 
 _salary = 800; 
} 
} 
 
公共重写字符串的ToString（）
 
 {
返回_name + _number + _date + _salary的ToString（ ）; 
} 
} 
} 
  

解决方案

您正在返回一个字符串，只是说这句话 _name + _number + _date + _salary 。

你可能想要做的是建立使用这些字段的字符串。如果你想他们都一起捣成泥的毗连会的工作，但它会非常不可读

 公共重写字符串的ToString（）
 {
返回String.Concat（_name，_number，_date，_salary ）; 
} 
  

不过，这将是更好的是使用的Format ，并包括与值的标签

 公共重写字符串的ToString（）
 {
返回的String.Format（名称：{0}，号码：{1}，日期：{2}，薪水：{3}，_名，_number，_date，_salary）; 
} 
  

Okay, so I wrote this program out of the exercise of a C# programming book (I'm trying to learn here) and it asks for "Override the ToString() method to return all data members".

Have I done this correctly? Or have I just successfully wrote code that compiles but does nothing. What is the purpose of ToString?

I have spent about 30 minutes looking at other posts on this and havn't figured it out, So I decided to make this.

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

namespace ConsoleApplication297
{
class Program
{
    static void Main(string[] args)
    {
        String name = "Stormtrooper";
        Employee s = new Employee(name);
        Console.WriteLine("The type of hire is a {0}", s.Name);
        Console.WriteLine("The identification number is {0}", s.Number);
        Console.WriteLine("The date of hire is {0} ABY", s.Date);
        Console.WriteLine("The standard galactic salary is...{0:C}", s.Salary);

    }

    class Employee
    {
        private string _name;
        private string _number;
        private int _date;
        private int _salary;
        public string Name
        {
            get
            {
                return _name;
            }
        }

        public string Number
        {
            get
            {
                return _number;
            }
        }

        public int Date
        {
            get
            {
                return _date;
            }
        }
        public int Salary
        {
            get
            {
                return _salary;
            }
        }
        public Employee(string n)
        {
            _name = n;
            _number = "AA23TK421";
            _date = 4;
            _salary = 800;
        }
    }

    public override string ToString()

    {
        return "_name + _number + _date + _salary".ToString();
    }
}
}

解决方案

You are returning a string that just says the phrase _name + _number + _date + _salary.

What you likely wanted to do is build a string using those fields. If you wanted them all mushed together Concat would work, but it would be highly un-readable

public override string ToString()
{
    return String.Concat(_name, _number, _date, _salary);
}

However what would be better is to use Format and include labels with the values

public override string ToString()
{
    return String.Format("Name: {0}, Number:{1}, Date:{2}, Salary:{3}",_name, _number, _date, _salary);
}

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