C# FileStream
C# FileStream is a class in the .NET Framework and .NET Core/5+ that provides a stream for reading from, writing to, and manipulating files on a file system. It allows developers to perform low-level file I/O operations, such as reading and writing bytes, seeking to specific positions, and handling file access modes like read, write, or append. It is part of the System.IO namespace and is commonly used for efficient file handling in C# applications.
Developers should learn and use C# FileStream when they need fine-grained control over file operations, such as processing large files in chunks to manage memory efficiently, performing random access reads/writes, or working with binary data. It is essential for scenarios like log file processing, data serialization, or when higher-level abstractions like StreamReader/StreamWriter are insufficient for performance or flexibility reasons.