What is files System in C#?

FileSystem is class in C# that is used to perform operations on files,folders and Registry.
You can see methods and properties of this class
FileSystem Class
File System and the Registry
FileSystemWatcher

The FileSystem module contains the procedures that are used to perform file, directory or folder, and system operations. The My feature gives you better productivity and performance in file I/O operations than using the FileSystem
module

C# Example:

FileInfo f = new FileInfo("file path");
string fname = f.FullName;
string fext = f.Extension;

file is the concept used to share,read and write etc from one directory are files.


an example for file concept:

Dim MyAttr As FileAttribute
' Assume file TESTFILE is normal and readonly.
MyAttr = GetAttr("C:\TESTFILE.txt") ' Returns vbNormal.

' Test for normal.
If (MyAttr And FileAttribute.Normal) = FileAttribute.Normal Then
MsgBox("This file is normal.")
End If

' Test for normal and readonly.
Dim normalReadonly As FileAttribute
normalReadonly = FileAttribute.Normal Or FileAttribute.ReadOnly
If (MyAttr And normalReadonly) = normalReadonly Then
MsgBox("This file is normal and readonly.")
End If

' Assume MYDIR is a directory or folder.
MyAttr = GetAttr("C:\MYDIR")
If (MyAttr And FileAttribute.Directory) = FileAttribute.Directory Then
MsgBox("MYDIR is a directory")
End If