Destructor in C#
In the previous tutorial, we discussed constructor in C# . In this C# tutorial, we are going to learn C# destructor. The destructor is opposite of the constructor. If you have already learned constructor, it will be easy for you.
The destructor is a special class function that destroys the object as soon as the scope of the object end. In C# programming, the destructor is called automatically by the compiler when the object goes out of scope. The destructors is also called automatically.
C# destructor can be defined once in a class.
Let's understand the C# destructor through syntax. The syntax of the destructor is similar to the syntax of the constructor, the same class name is used for a name for C# destructor with a tilde ~ sign as the prefix to it.
In simple words -
C# constructor is created by the same name of the class without any special sign but if you want to create destructor, you have to use tilde ~ sign with the same class name.
C# destructor syntax -
class Hello
{
public:
// defining destructor for class Hello
~Hello()
{
// statement
}
};
In the above syntax, you can see the destructor is created with tilde sign. The destructor cannot have any arguments.
Example of C# constructor and destructor-
In this example, we are going to create a simple class. In this C# example, we will create constructor and destructor with the same name of class. We will create an object of class and see when a constructor is called and when a destructor gets called.
using System;
public class Student
{
public string name;
public double roll_no;
public Student()
{
Console.WriteLine("Constructor called");
}
~Student()
{
Console.WriteLine("Destructor Called");
}
}
class TestStudent{
public static void Main(string[] args)
{
Student obj1 = new Student();
Student obj2 = new Student();
}
}
Output -
Constructor called Constructor called Destructor Called Destructor Called
When an object is created the constructor and destructor of that class are called.
