What are constructors in C# programs?

A class constructor is a special member function of a class that is executed whenever we create new objects of that class.

A constructor has exactly the same name as that of class and it does not have any return type.

Constructor has the same name as the class name −

class Demo {

   public Demo() {}

The following is an example −


 Live Demo

using System;

namespace LineApplication {
   class Line {
      private double length; // Length of a line

      public Line() {
         Console.WriteLine("Object is being created");

      public void setLength( double len ) {
         length = len;

      public double getLength() {
         return length;

      static void Main(string[] args) {
         Line line = new Line();

         // set line length
         Console.WriteLine("Length of line : {0}", line.getLength());


Object is being created
Length of line : 6

Samual Sam
Samual Sam

Learning faster. Every day.

Updated on: 20-Jun-2020


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