如何解决C# Setter 根本不起作用它不调用任何代码
我正在尝试更改以下代码中的 Cents
。但我已经被困了将近一个小时。我就是不能改变这个美分。 Cents 中的 Setter 根本不起作用。它不会改变值,即使我使 Console.WriteLine("It's been written in Cents setter");
它也不会被调用。
using System;
using System.Collections;
using System.Collections.Generic;
class Program
{
static void Main(string[] args)
{
BankAccount a = new BankAccount(50,200);
Console.WriteLine(a.Cents);
Console.ReadLine();
}
}
class BankAccount
{
public BankAccount(uint dollars,uint cents)
{
this.Dollars = dollars;
this.cents = cents;
}
public uint Dollars { get; private set;}
private uint cents;
public uint Cents
{
get
{
return cents;
}
private set
{
cents = 500; //It doesnt change
Console.WriteLine("It's been written in Cents setter"); // I can't invoke it
}
}
}
解决方法
您混淆了支持字段 cents
和属性 Cents
。在 BankAccount
的构造函数中,将 cents
更改为 Cents
,setter 将被调用。
同样在 setter 中你可能想说 cents = value
这是正确的实现
using System;
class BankAccount
{
private uint _dollars;
private uint _cents;
public BankAccount(uint dollars,uint cents)
{
this._dollars = dollars;
this._cents = cents;
}
// default constructor
public BankAccount()
{
this._dollars = 0;
this._cents = 0;
}
public uint Cents
{
get
{
return _cents;
}
set
{
_cents = value;
}
}
public uint Dollars
{
get
{
return _dollars;
}
set
{
_dollars = value;
}
}
}
class Program
{
static void Main(string[] args)
{
BankAccount account1 = new BankAccount(100,5);
Console.WriteLine($"There are {account1.Dollars} dollars and {account1.Cents} cents on your bank account");
account1.Dollars = 200;
account1.Cents = 28;
Console.WriteLine($"There are {account1.Dollars} dollars and {account1.Cents} cents on your bank account");
}
}
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