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C# This

C# This

What is the use of this Keyword in C# ?

  • In c# programming, this is a keyword that refers to the current instance of the class.
  • There can be 3 main usage of this keyword in C#.
    • It can be used to refer current class instance variable. It is used if field names (instance variables) and parameter names are same, that is why both can be distinguish easily.
    • It can be used to pass current object as a parameter to another method.
    • It can be used to declare indexers.
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this keyword in c# Example

C# this example

  • Let's see the example of this keyword in C# that refers to the fields of current class.
using System;  
   public class Employee  
    {  
        public int id;   
        public String name;  
        public float salary;  
        public Employee(int id, String name,float salary)  
        {  
            this.id = id;  
            this.name = name;  
            this.salary = salary;  
        }  
        public void display()  
        {  
            Console.WriteLine(id + " " + name+" "+salary);  
        }  
   }  
   class TestEmployee{  
       public static void Main(string[] args)  
        {  
            Employee e1 = new Employee(101, "Sonoo", 890000f);  
           Employee e2 = new Employee(102, "Mahesh", 490000f);  
            e1.display();  
            e2.display();  
  
        }  
}

C# examples - Output :

101   Sonoo     890000
102   Mahesh   490000

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