There is a book of Packt Publishing Pvt Ltd which is infringed and the link for the same is provided.
Here's the link: https://sd.blackball.lv/books/19320-csharp-11-and-net-7-modern-cross-platform-development-fundamentals
The original content can be found on this website : https://www.packtpub.com/product/c-11-and-net-7-modern-cross-platform-development-fundamentals-seventh-edition/9781803237800
We hereby request you to please take down the book at the earliest as it is used for violation of copyright law.