好的,所以我写了一个C#编程书(我想在这里学习)的这个程序,它要求“覆盖ToString()方法返回所有的数据成员”.
我这样做是否正确？或者我刚刚成功编写了编译但不做任何事情的代码. ToString的目的是什么？
我花了约30分钟看着其他帖子,没有想到,所以我决定这样做.
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();
}
}
}
解决方法
你正在返回一个字符串,它只是说_name _number _date _salary.
你可能想要做的是使用这些字段构建一个字符串.如果你想让他们一起冲洗Concat会工作,但它将是非常不可读的
public override string ToString()
{
return String.Concat(_name,_number,_date,_salary);
}
public override string ToString()
{
return String.Format("Name: {0},Number:{1},Date:{2},Salary:{3}",_name,_salary);
}
