Use of Constructor and Destructor ?

     //Constructors are used to create a object for a class.
    public class Person
    {
        
        public string Name {get;set;}
        public int Id{get;set;}
        
        
        //Default constructor or silent constructor
        public Person()
        {
            Console.WriteLine("Default constructor called");
        }
        
        public Person(string Name)
        {
            this.Name = Name;
            Console.WriteLine("One arguemented constructor called");
            Console.WriteLine("Person name is "+ this.Name);
        }
        
        public Person(string Name,int Id)
        {
            this.Name = Name;
            this.Id = Id;
            Console.WriteLine("Two arguemented constructor called");
            Console.WriteLine("Person name is "+ this.Name +  " id " + this.Id);
        }
        
        public  virtual void draw()
        {
            Console.WriteLine("Base class draw method called");
        }
        
        ~Person()
        {
            Console.WriteLine("Destructor called");
        }
    }
    
    
    public class Employee : Person
    {
        
        public override void  draw()
        {
            Console.WriteLine("Child class draw method called");
            
            
        } 
            
    }

 Person p = new Person();
            p.draw();
            
            Employee emp = new Employee();
            emp.draw();

The person object will call the draw method from person and Employee object method will call the draw method from employee class.
To override the method in child class, in the base class that method should be marked as virtual then you can override it in the child class.

If the method is not marked as virtual in the base class, still can override it by using "new" keyword instead of override.


 public new void  draw()
        {
            Console.WriteLine("Child class draw method called");
            
            
        }