Professional C# and .NET is an excellent source of knowledge about the C# programming language and the .NET platform. The book covers the core concepts of C# in detail, including syntax, data types, variables, operators, classes, objects, advanced OOP topics, dynamic programming, and more. The authors describe in detail the capabilities of the .NET platform, including working with various data types, network operations, working with databases, creating web applications, and using cloud technology services. The book also draws attention to the development of mobile applications using .NET technologies. "Professional C# and .NET" is great for those who want to learn C# in depth and master the skills of developing applications on the .NET platform. The book also includes instructions for using popular development tools, code examples, and self-study exercises.