C # -- this keyword (1 ),

C # -- this keyword (1 ),

// My C # is followed by Meng Ge (Liu tiemeng) (my formal teacher), and I learned "C # getting started with languages, I also explained some things I don't know. It's a huge fortune and a rare mentor!

 

When I was learning C #, the teacher used the this keyword in some examples. Meng gave a slight explanation in the video and did not explain it in depth, I still have questions on this part: how can I use this keyword?

So I looked for some information this afternoon and did not know whether my understanding was correct. I hope you can give me some guidance.

 

Starting fromMicrosoft's official C # programming guideExcerpt section:

The following are common uses of this:

• Restrict hidden members with similar names

• Passing objects as parameters to other methods

• Declare Indexer

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For the first purposeRestrict hidden members with similar namesI have just got a clue that my language organization capability is poor. Let's take a look at it through an example:

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace @this{    class Program    {        static void Main(string[] args)        {            Student stu = new Student();            stu.GetMessage("Mark", 1);            Console.WriteLine("My name is {0}.My ID number is {1}.",stu.Name,stu.ID);        }    }    class Student    {        public string  Name { get; set; }        public int ID { get; set; }        public void GetMessage(string Name,int ID)        {            this.Name = Name;            this.ID = ID;        }    }}

　　

This. Name = Name; // The Name here is the Name passed in.

This. ID = ID; // The ID here is the uploaded ID.

This refers to an instance created in the Student class (or replaced by this)

Let's change the code:

public void GetMessage(string Name,int ID)        {            Student stu = new Student();            stu.Name = Name;            stu.ID = ID;        }

We created an instance named stu in this class and assigned a value for "himself" through it. After running, the program is exactly the same.

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Make a summary of the first purpose:

To put it bluntly, we can think that this creates an instance for us and then uses this instance for a series of operations.

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To be Continued!

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I hope that the majority of users will point out the problem, point out where I have understood the mistake, communicate with each other, and make progress together!