https://www.filemagic.com/en/g....ame-files/cs-file-ex
FileMagic is a comprehensive and versatile universal file viewer designed to open, analyze, and interpret a vast range of file types—from everyday formats to obscure, technical, and developer-oriented extensions. One such developer-centric format that FileMagic fully supports is the CS file. A CS file, denoted by its .cs extension, stands for C# source code file. is the primary format used for writing code in C#, a modern object-oriented programming language developed by Microsoft. C# is widely used for