Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By : Mark J. Price
Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By: Mark J. Price

Overview of this book

In C# 9 and .NET 5 – Modern Cross-Platform Development, Fifth Edition, expert teacher Mark J. Price gives you everything you need to start programming C# applications. This latest edition uses the popular Visual Studio Code editor to work across all major operating systems. It is fully updated and expanded with a new chapter on the Microsoft Blazor framework. The book’s first part teaches the fundamentals of C#, including object-oriented programming and new C# 9 features such as top-level programs, target-typed new object instantiation, and immutable types using the record keyword. Part 2 covers the .NET APIs, for performing tasks like managing and querying data, monitoring and improving performance, and working with the file system, async streams, serialization, and encryption. Part 3 provides examples of cross-platform apps you can build and deploy, such as websites and services using ASP.NET Core or mobile apps using Xamarin.Forms. The best type of application for learning the C# language constructs and many of the .NET libraries is one that does not distract with unnecessary application code. For that reason, the C# and .NET topics covered in Chapters 1 to 13 feature console applications. In Chapters 14 to 20, having mastered the basics of the language and libraries, you will build practical applications using ASP.NET Core, Model-View-Controller (MVC), and Blazor. By the end of the book, you will have acquired the understanding and skills you need to use C# 9 and .NET 5 to create websites, services, and mobile apps.
Table of Contents (23 chapters)

What's new in cryptography?

An automatic benefit of using .NET Core 3.0 or later is that algorithms for hashing, hash-based message authentication code (HMAC), random number generation, asymmetric signature generation and processing, and RSA encryption have been rewritten to use Span<T> so they achieve better performance. For example, Rfc2898DeriveBytes is about 15% faster.

Some enhancements have been made to the cryptography APIs that are useful in advanced scenarios, including:

  • Signing and verifying of CMS/PKCS #7 messages.
  • Enable X509Certificate.GetCertHash and X509Certificate.GetCertHashString to get certificate thumbprint values using algorithms other than SHA-1.
  • The CryptographicOperations class with useful methods like ZeroMemory to securely clear memory.
  • RandomNumberGenerator has a Fill method that will fill a span with random values and doesn't require you to manage an IDisposable resource.
  • APIs to read, validate, and...