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( );
}
}
}
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();
}
}
}
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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