The book "Study C #" will help in understanding the language C # and its various features. This book will also equip you with advanced skills in . NETs associated with . NET Development. In this module, we will also consider various advanced features such as attributes, edits, files, and threads. This book was created by the members of the design team and is designed to introduce users to the best innovations in the field of information technology The development of the book was carried out in accordance with the ISO 9001 certificate of the Aptech IT department in the field of educational services. The development team within the framework of Aptech's program for high quality assurance carries out research activities aimed at improving the educational process in accordance with the trends in the development of technologies .