04 Feb C# Destructors

A Destructor destructs an object. It has the same name as the class name and gets automatically called when an object gets created like Constructors.

Syntax – Destructors

Let us see the syntax of Destructors with our class name Studyopedia. It is prefixed by a tilde sign as shown below:

Studyopedia() {     // Constructor
  // Code comes here
}
~Studyopedia() {     // Destructor
  // Code comes here
}

As shown above, the Destructor syntax is like the Constructor, except for the prefixed tilde sign. Remember, the following points about Destructors:

• Define Destructor only once in a class
• Destructors cannot return a value
• Destructors cannot have parameters like Constructors.
• The Destructors cannot be overloaded.
• The Destructors cannot be inherited.

Example – Destructors

Let us now see an example of Destructors in C++:

using System;

namespace Demo
{
  class Rectangle
  {
    // Constructor name is the same as the class name
    Rectangle() {     
      Console.WriteLine("The Constructor!!");
      Console.WriteLine("A rectangle has 4 sides, 4 corners, and 4 right angles");
    }
    
    // Destructor name is the same as the class name with a prefixed tilde sign
    ~Rectangle() {     
      Console.WriteLine("\Destructor gets invoked automatically!!");
    }

    static void Main(string[] args)
    {
      /* Constructor and Destructor gets called automatically when we 
         create an object of a class */
      Rectangle rct = new Rectangle();   
    }
  }
}

Output

The Constructor!!
A rectangle has 4 sides, 4 corners, and 4 right angles

Destructor gets invoked automatically!!