Skip to main content

Polymorphism in C#

Polymorphism in C#:-

Poly means Many and Morphism means Forms, using this we can use the same name method or operator for more than one functionality, for example, + is the operator which can be used for addition and String Concatenation.


Type of Polymorphism :


1)  Static Polymorphism:-

 It will perform the operation at compile time. if we create more than one function with the same name under a single class then it is an example of static polymorphism.

   1.1 ) Function Overloading:-

We will create the same name function only the parameters will be different. using this we can save the extra memory allocation for different function names;

     void Addition(int x,int y)
    {

    }

   void Addition(int x, int y, int z)
   {


    }

    void Addition(int x, float y)
    {


     }

Example of Function Overloading:-

class OverloadingExample
    {
        void Addition(int x, int y)
        {
            Console.WriteLine(x + y);

        }
        void Addition(int x, int y,int z)
        {
            Console.WriteLine(x + y+z);

        }
        public static void Main()
        {
            OverloadingExample obj = new OverloadingExample();
            obj.Addition(100, 200);
            obj.Addition(100, 200,300);
            Console.ReadKey();

        }
    }


Example of Function Overloading?

class Operation
    {
        float c;
        void Add(int a,int b)
        {
            c = a + b;
            Console.WriteLine(c);
        }
      
        void Add(int a, float b)
        {
            c = a + b;
            Console.WriteLine(c);
        }
        void Add(float a, int b)
        {
            c = a + b;
            Console.WriteLine(c);
        }
        void Add(float a, float b)
        {
            c = a + b;
            Console.WriteLine(c);
        }

        static void Main()
        {
            Operation obj = new Operation();
            obj.Add(100.2F, 20.2F);
            Console.ReadKey();
        }
    }



2)  Dynamic Polymorphism:-   

It will perform the operation at run time using the object. Overriding and Overhiding is an example of Dynamic Polymorphism.


2.1)Method Overriding:

  We will create the same name method from the base class to derive class only functionality will be different.
 For example, if we create a base class to child class with the same name method then it will be overridden.

In C# we will use virtual keyword in the parent class method and override keyword in the child class method.

class A
    {
       internal virtual void fun()
        {
            Console.WriteLine("A");
        }
    }
    class B:A
    {
       internal override void fun()
        {
            Console.WriteLine("B");
        }
        static void Main()
        {
          A obj = new B();
            obj.fun();
            Console.ReadKey();
        }
    }

2.2) Method Over-hiding:- 

We will create the same name method from the base class to the derived class where the base class method automatically hiding by the child class Object.
No need to write any keyword under Method Overhiding Concept.

When we create a parent class objects then the child class method will be hide when we create a child objects then the parent class method will hide.
class A
    {
       internal void fun()
        {
            Console.WriteLine("A");
        }
    }
    class B: A
    {
       internal void fun()
        {
            Console.WriteLine("B");
        }
        static void Main()
        {
          A obj = new B();
            obj.fun();
            Console.ReadKey();
        }
    }



Labels:

Comments

Post a Comment

POST Answer of Questions and ASK to Doubt

Popular posts from this blog

Uncontrolled form input in React-JS

  Uncontrolled form input in React-JS? If we want to take input from users without any separate event handling then we can uncontrolled the data binding technique. The uncontrolled input is similar to the traditional HTML form inputs. The DOM itself handles the form data. Here, the HTML elements maintain their own state that will be updated when the input value changes. To write an uncontrolled component, you need to use a ref to get form values from the DOM. In other words, there is no need to write an event handler for every state update. You can use a ref to access the input field value of the form from the DOM. Example of Uncontrolled Form Input:- import React from "react" ; export class Info extends React . Component {     constructor ( props )     {         super ( props );         this . fun = this . fun . bind ( this ); //event method binding         this . input = React . createRef ();...
Post a Comment
Read more

JDBC using JSP and Servlet

JDBC means Java Database Connectivity ,It is intermediates from Application to database. JDBC has different type of divers and provides to communicate from database server. JDBC contain four different type of approach to communicate with Database Type 1:- JDBC-ODBC Driver Type2:- JDBC Vendor specific Type3 :- JDBC Network Specific Type4:- JDBC Client-Server based Driver  or JAVA thin driver:- Mostly we prefer Type 4 type of Driver to communicate with database server. Step for JDBC:- 1  Create Database using MYSQL ,ORACLE ,MS-SQL or any other database 2   Create Table using database server 3   Create Form according to database table 4  Submit Form and get form data into servlet 5  write JDBC Code:-     5.1)   import package    import java.sql.*     5.2)  Add JDBC Driver according to database ide tools     5.3)  call driver in program         ...
4 comments
Read more

JSP Page design using Internal CSS

  JSP is used to design the user interface of an application, CSS is used to provide set of properties. Jsp provide proper page template to create user interface of dynamic web application. We can write CSS using three different ways 1)  inline CSS:-   we will write CSS tag under HTML elements <div style="width:200px; height:100px; background-color:green;"></div> 2)  Internal CSS:-  we will write CSS under <style> block. <style type="text/css"> #abc { width:200px;  height:100px;  background-color:green; } </style> <div id="abc"></div> 3) External CSS:-  we will write CSS to create a separate file and link it into HTML Web pages. create a separate file and named it style.css #abc { width:200px;  height:100px;  background-color:green; } go into Jsp page and link style.css <link href="style.css"  type="text/css" rel="stylesheet"   /> <div id="abc"> </div> Exam...
Post a Comment
Read more