什么是'this'关键字？

本文介绍了什么是'this'关键字？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

这个''''的关键词是什么？如果我正在填写一个文本框，那么 之间的区别是什么？b $ b this.textbox1.Text =" my text" ;;和textbox1.Text =" my text" ;; ？ 我通常使用它而没有这个。 谢谢。

What is the ''this'' keyeword for? If I''m filling a textbox, what''s the difference between this.textbox1.Text = "my text"; and textbox1.Text = "my text"; ? I normally use it w/o the ''this''. Thanks.

推荐答案

当您在类的方法或属性中编写代码时，使用this 将允许您使用intellisense。 我猜这在Winform应用程序中特别有用。有很多 属性/方法可供使用... appart来自你所提到的情况，没有差异。完全没有 $ b $bJosé " vaughn" < VM> écritdansle message de news：uC ************** @ TK2MSFTNGP12.phx.gbl ... When you are writting code in method or property of a class, using "this" will allow you to make use of the intellisense. I guess this is particulary usefull in Winform apps. There are so many properties/methods to use... appart from that in the situation you mentioned, there is no diff. at all José "vaughn" <VM> a écrit dans le message de news:uC**************@TK2MSFTNGP12.phx.gbl... 什么是''this''的关键词是？如果我正在填写一个文本框， this.textbox1.Text =" my text" ;; 之间的区别是什么？和textbox1.Text =" my text" ;; ？我通常使用它而没有这个。谢谢。 What is the ''this'' keyeword for? If I''m filling a textbox, what''s the difference between this.textbox1.Text = "my text"; and textbox1.Text = "my text"; ? I normally use it w/o the ''this''. Thanks.

"这"表示您所在的当前对象的实例。 假设您有： 类测试{ TextBox t1 = new TextBox （）; public void Method（）{ TextBox t1 = new TextBox（）; this.t1.Text =" blah" ;; //调用属于 类的文本框。 t1.Text =" blah2" ;; //调用属于该方法的文本框。 //两个文本框完全不同，并且它们彼此没有任何关系。一个具有更广泛的范围（第一个定义的是），而第二个范围仅限于 方法//Method（） } } " vaughn" < VM>在消息新闻中写道：uC ************** @ TK2MSFTNGP12.phx.gbl ... "this" represents the instance of the current object you are on. Lets say that you have a: class Test{ TextBox t1 = new TextBox(); public void Method(){ TextBox t1 = new TextBox(); this.t1.Text = "blah"; // calls the textbox that belongs to the class. t1.Text = "blah2"; // calls the textbox that belongs to the method. //both textboxes are completely different, and they have nothing to do //with each other. One has a broader scope (the one that is defined //first) while the scope of the second one is limited to the method //"Method()" } } "vaughn" <VM> wrote in message news:uC**************@TK2MSFTNGP12.phx.gbl... 这个''''的关键词是什么？如果我正在填写一个文本框， this.textbox1.Text =" my text" ;; 之间的区别是什么？和textbox1.Text =" my text" ;; ？我通常使用它而没有''这个'。谢谢。 What is the ''this'' keyeword for? If I''m filling a textbox, what''s the difference between this.textbox1.Text = "my text"; and textbox1.Text = "my text"; ? I normally use it w/o the ''this''. Thanks.

嗨vaughn ， 您可以使用或不使用* this *。使用* this *可能会使代码更清晰 并且在使用InetlliSense时会有所帮助。 当你有本地变量时，这* *是解决歧义的必要条件 并键入具有相同名称的成员。 HTH B \ rgds 100 " vaughn" < VM>在消息新闻中写道：uC ************** @ TK2MSFTNGP12.phx.gbl ... Hi vaughn, You can used with or without *this*. Using *this* may make the code clearer and it helps when use InetlliSense. Hoever *this* is necesarry to solve ambiguities when you have local variable and type member with the same name. HTH B\rgds 100 "vaughn" <VM> wrote in message news:uC**************@TK2MSFTNGP12.phx.gbl... 这个''''的关键词是什么？如果我正在填写一个文本框， this.textbox1.Text =" my text" ;; 之间的区别是什么？和textbox1.Text =" my text" ;; ？我通常使用它而没有''这个'。谢谢。 What is the ''this'' keyeword for? If I''m filling a textbox, what''s the difference between this.textbox1.Text = "my text"; and textbox1.Text = "my text"; ? I normally use it w/o the ''this''. Thanks.