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在跟着刘铁猛老师学习的过程里， This，不太明白 例如下面这段代码 注释的地方去掉 this. 不会报错 编译结果也一样 可是这么写是不是就不对了呢？ *（不太会排版）
img5d · Feb 21, 2020 · 8975 viewsThis topic created in 2260 days ago, the information mentioned may be changed or developed.
namespace PropertyExamples
{
class Program
{
static void Main(string[] args)
{
try
{
Student stu1 = new Student();
stu1.SetAge(20);
Student stu2 = new Student();
stu2.SetAge(20);
Student stu3 = new Student();
stu3.SetAge(200);
int avgAge = (stu1.GetAge() + stu2.GetAge() + stu3.GetAge() / 3);
Console.WriteLine(avgAge);
}
catch (Exception wx)
{
Console.WriteLine(wx.Message);
}
}
}
class Student
{
private int age;
public int GetAge()
{
return this.age; // 请看这里
}
public void SetAge(int value)
{
if (value>=0 && value <= 120)
{
this.age = value; // 请看这里
}
else
{
throw new Exception("Age value has error");
}
}
}
}
{
class Program
{
static void Main(string[] args)
{
try
{
Student stu1 = new Student();
stu1.SetAge(20);
Student stu2 = new Student();
stu2.SetAge(20);
Student stu3 = new Student();
stu3.SetAge(200);
int avgAge = (stu1.GetAge() + stu2.GetAge() + stu3.GetAge() / 3);
Console.WriteLine(avgAge);
}
catch (Exception wx)
{
Console.WriteLine(wx.Message);
}
}
}
class Student
{
private int age;
public int GetAge()
{
return this.age; // 请看这里
}
public void SetAge(int value)
{
if (value>=0 && value <= 120)
{
this.age = value; // 请看这里
}
else
{
throw new Exception("Age value has error");
}
}
}
}
 |
1
MaxTan Feb 21, 2020  1
可以去掉没毛病，当局部变量和类成员有重名时就需要加 this 来明确了，类似这样
``` class Student { private int age; public int GetAge() { int age = 20; return this.age; //不加 this 就是 return 局部变量 age } } ``` |
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