Services
Technology Web App Development Mobile App Development Windows App Development Database Development UI/UX Development Cloud Development SEO Digital Marketing Guest Posting Content Writing Artificial Intelligence Data Science ERP Development CRM Development CMS Development LMS Development Business Listing Blockchain Technology Startup Promotion AI Tools Integration
Products
Data Converter Cleaner TUC - Unit Converter Import Export Survey Manager Tweet Controller
Developer
Article Blog Forum Interview Beginner News Startup Quiz
Users
Career
Apply Job Internship
Pricing
Login Sign Up Get a Quote

interview

home / developersection / interviews / how to use sealed classes in the c# program?
Ask Question

How to use Sealed classes in the c# program?

Barbara Jones 1899 14 Sep 2016
c# c#
Updated 16 Sep 2020
Barbara Jones
Barbara Jones

Other

Message

1 Answers

Barbara Jones
Barbara Jones 14 Sep 2016
Report Abuse

If we use Sealed classes in the program, then we can't inherit it.

In C#, the sealed modifier is used to define a class as sealed.

Below are two examples where we can use sealed key word for the class :

1st example

Below program will run successfully even after using the sealed keyword.


using System;sealed class Restclass
{
    public int
Add(int x, int y)
    {
        return x +
y;
    }
}
class program
{
    static void
Main(string[] args)
    {
        Restclass
implecls = new Restclass();
        int total =
implecls.Add(4, 5);
       
Console.WriteLine("Total = {0} " ,total);
       
Console.ReadLine();
    }
}

2nd example :

Below program will not run as Test class is sealed which cannot be inherit. 

Public sealed class Test
{
public int Number;
public string Name;
} 
Public sealed class child1:Test
{
public string Name;
} 
MindStick Training