C＃何时使用＆QUOT;本＆QUOT;关键词 [英] C# When To Use "This" Keyword

问题描述

可能重复：结果
  当你使用＆ldquo;这＆rdquo;的关键字？

您好，
据我所知，这关键字用来指类的实例，但是，假设我有一类称为人寿，它定义了两个字段，这个人（的他们的名字的）和他们的合作伙伴（的他们的名字的）：

Hello, I understand that the This keyword is used to refer to an instance of the class, however, suppose I have a class called Life, which defines two fields, the person (their name) and their partner(their name):

class Life
{
    //Fields
    private string _person;
    private string _partner;

    //Properties
    public string Person
    {
        get { return _person; }
        set { _person = value; }
    }

    public string Partner
    {
        get { return _partner; }
        set { _partner = value; }
    }

    //Constructor 1
    public Life()
    {
        _person = "Dave";
        _partner = "Sarah";

        MessageBox.Show("Life Constructor Called");
    }

    //Constructor 2
    public Life()
    {
        this._person = "Dave";
        this._partner = "Sarah";

        MessageBox.Show("Life Constructor Called");
    }
}

有没有构造函数1和2的构造函数之间的差异！？
还是只是更好的编码的做法是使用了这个关键字？

Is there a difference between constructor 1 and constructor 2!? Or is it just better coding practice to use the "This" keyword?

问候

推荐答案

的构造是相同的。 <罢>我想preFER第二个是，它可以让你从你的私有变量名称中删除下划线并保留上下文（可理解性改善）的原因。我让实践始终使用这个引用实例变量和属性时。

The constructors are the same. The reason I would prefer the second is that it will allow you to remove the underscores from your private variable names and retain the context (improving understandability). I make it a practice to always use this when referring to instance variables and properties.

我不再使用这个关键字以这种方式移动到不同的公司不同的标准之后。我已经习惯了它，现在参照实例成员时，很少使用它。我还是建议使用属性（显然）。

I no longer use the this keyword in this way after moving to a different company with different standards. I've gotten used to it and now rarely use it at all when referring to instance members. I do still recommend using properties (obviously).

我的版本类的：

class Life
{
    //Fields
    private string person;
    private string partner;

    //Properties
    public string Person
    {
        get { return this.person; }
        set { this.person = value; }
    }

    public string Partner
    {
        get { return this.partner; }
        set { this.partner = value; }
    }


    public Life()
    {
        this.person = "Dave";
        this.partner = "Sarah";

        MessageBox.Show("Life Constructor Called");
    }
}

，或者甚至更好，但不是使用清晰这个与领域。

class Life
{

    //Properties
    public string Person { get; set; }
    public string Partner { get; set; }

    public Life()
    {
        this.Person = "Dave";
        this.Partner = "Sarah";

        MessageBox.Show("Life Constructor Called");
    }
}

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