C Sharp this keyword

C# this

To refer to the current instance of the class, “this” keyword is used in C#.

Uses of this keyword in C#:

To refer to the current class instance variable to easily distinguish the instance variables or the field names and names of the parameters in case they are the same.
To pass the current object as a parameter to another method.
For declaring indexers.

Example:

using System;  
   public class Employee  
    {  
        public int emp_id;   
        public String emp_name;  
        public void insert(int x, String y)  
        {  
            emp_id = x;  
            emp_name = y;  
        }  
        public void display()  
        {  
            Console.WriteLine(emp_id + " " + emp_name);  
        }  
   }  
   class Details{  
       public static void Main(string[] args)  
        {  
            Employee e1 = new Employee();  
            Employee e2 = new Employee(); 
            Employee e3 = new Employee(); 
            Employee e4 = new Employee(); 
            Employee e5 = new Employee(); 
            e1.insert(10, "Vishal Gupta");  
            e2.insert(11, "Thomas Edison");  
            e3.insert(12, "Tom Smith");  
            e4.insert(13, "Sunita Wills");  
            e5.insert(14, "David Cruise");  
            e1.display();  
            e2.display(); 
            e3.display(); 
            e4.display(); 
            e5.display(); 
 
        }  
    }

Output:

Explanation:

In the above example, we are using C# ‘this’ keyword to refer to the fields of the current class.