The C# Essentials online book contains 27 chapters of detailed information intended to provide everything necessary to gain proficiency as a C# programmer. The book begins with a detailed overview of the C# development and runtime environment with overviews of the Common Language Infrastructure (CLI), Common Intermediate Language (CIL) and Virtual Execution System (VES) followed by simple steps to creating both Windows and console based C# applications. A number of chapters are dedicated to the fundamentals of the C# programming language,
Including topics such as variables, constants, operators, flow control, looping and object oriented programming (including topics such as inheritance and abstract classes). Subsequent chapters focus on issues such as manipulating and formatting strings and working with arrays and collection classes. Once the basics of the C# language have been covered the final stages of the book focus on the design of GUI based applications using C# in conjunction with Visual Studio.