C# Constructor

by Online Tutorials Library July 14, 2022

C# Constructor

In C#, constructor is a special method which is invoked automatically at the time of object creation. It is used to initialize the data members of new object generally. The constructor in C# has the same name as class or struct.

There can be two types of constructors in C#.

Default constructor
Parameterized constructor

C# Default Constructor

A constructor which has no argument is known as default constructor. It is invoked at the time of creating object.

C# Default Constructor Example: Having Main() within class

 using System;    public class Employee     {         public Employee()         {             Console.WriteLine(“Default Constructor Invoked”);         }         public static void Main(string[] args)         {             Employee e1 = new Employee();             Employee e2 = new Employee();         }     } 

Output:

Default Constructor Invoked  Default Constructor Invoked

C# Default Constructor Example: Having Main() in another class

Let’s see another example of default constructor where we are having Main() method in another class.

 using System;    public class Employee     {         public Employee()         {             Console.WriteLine(“Default Constructor Invoked”);         }     }    class TestEmployee{        public static void Main(string[] args)         {             Employee e1 = new Employee();             Employee e2 = new Employee();         }     } 

Output:

Default Constructor Invoked  Default Constructor Invoked

C# Parameterized Constructor

A constructor which has parameters is called parameterized constructor. It is used to provide different values to distinct objects.

 using System;    public class Employee     {         public int id;          public String name;         public float salary;         public Employee(int i, String n,float s)         {             id = i;             name = n;             salary = s;         }         public void display()         {             Console.WriteLine(id + ” ” + name+” “+salary);         }    }    class TestEmployee{        public static void Main(string[] args)         {             Employee e1 = new Employee(101, “tutor”, 890000f);             Employee e2 = new Employee(102, “Mahesh”, 490000f);             e1.display();             e2.display();          }     } 

Output:

101 tutor 890000 102 Mahesh 490000

Next TopicC# Destructor

beginners c class constructor example introduction loops object professionals properties statements static keyword structs this tutorial

C# Constructor

C# Constructor

C# Default Constructor

C# Default Constructor Example: Having Main() within class

C# Default Constructor Example: Having Main() in another class

C# Parameterized Constructor

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