Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
C# 11 and .NET 7 – Modern Cross-Platform Development Fundamentals

You're reading from   C# 11 and .NET 7 – Modern Cross-Platform Development Fundamentals Start building websites and services with ASP.NET Core 7, Blazor, and EF Core 7

Arrow left icon
Product type Paperback
Published in Nov 2022
Publisher Packt
ISBN-13 9781803237800
Length 818 pages
Edition 7th Edition
Languages
Tools
Arrow right icon
Author (1):
Arrow left icon
Mark J. Price Mark J. Price
Author Profile Icon Mark J. Price
Mark J. Price
Arrow right icon
View More author details
Toc

Table of Contents (19) Chapters Close

Preface 1. Hello, C#! Welcome, .NET! 2. Speaking C# FREE CHAPTER 3. Controlling Flow, Converting Types, and Handling Exceptions 4. Writing, Debugging, and Testing Functions 5. Building Your Own Types with Object-Oriented Programming 6. Implementing Interfaces and Inheriting Classes 7. Packaging and Distributing .NET Types 8. Working with Common .NET Types 9. Working with Files, Streams, and Serialization 10. Working with Data Using Entity Framework Core 11. Querying and Manipulating Data Using LINQ 12. Introducing Web Development Using ASP.NET Core 13. Building Websites Using ASP.NET Core Razor Pages 14. Building Websites Using the Model-View-Controller Pattern 15. Building and Consuming Web Services 16. Building User Interfaces Using Blazor 17. Epilogue 18. Index

Inheriting from classes

The Person type we created earlier derived (inherited) from object, the alias for System.Object. Now, we will create a subclass that inherits from Person:

  1. In the PacktLibrary project, add a new class file named Employee.cs.
  2. Modify its contents to define a class named Employee that derives from Person, as shown in the following code:
    namespace Packt.Shared;
    public class Employee : Person
    {
    }
    
  3. In the PeopleApp project, in Program.cs, add statements to create an instance of the Employee class, as shown in the following code:
    Employee john = new()
    {
      Name = "John Jones",
      DateOfBirth = new(year: 1990, month: 7, day: 28)
    };
    john.WriteToConsole();
    
  4. Run the code and view the result, as shown in the following output:
    John Jones was born on a Saturday.
    

Note that the Employee class has inherited all the members of Person.

Extending classes to add functionality

Now...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime