File I/O in C# (using C# to read, write, delete, and copy files) A file is a collection of data with a defined name and directory path saved on a disc. A stream is created when a file is opened for reading or writing.
System.IO Classes in C#:
BinaryReader: This class is used to read binary data types from primitive data types. BinaryWriter: The BinaryWriter class is used to write primitive data types to streams in binary format.
File: This class contains many methods for working with files, including as create, deleting, copying, renaming, and move. There are more stuff.
Advance File I/O is a feature of the C# programming language that allows you to write code to read and write files in a way that is more efficient than using the standard file system APIs.