C# System.IO Namespace - File I/O Using C#

Constructor	Description
Binary Reader	It is used to read primitive data types as binary values in a specific encoding.
Binary Writer	It is used to write primitive types in binary to a stream.
Buffered Stream	It is used to add a buffering layer to read and write operations on another stream. It is a sealed class.
Directory	It is used to expose static methods for creating, moving and enumerating through directories and subdirectories. It is a sealed class.
Directory Info	It is used to expose instance methods for creating, moving and enumerating through directories and subdirectories. It is a sealed class.
Directory Not Found Exception	It is used to handle exception related to the file or directory cannot be found.
Drive Info	It is used to access the information on a drive.
Drive Not Found Exception	It is used to handle drive not found exception.
End Of Stream Exception	It is used to handle end of stream exception.
Error Event Args	It provides data for the File System Watcher.Error event.
File	This class provides static methods for the creation, copying, deletion, moving and opening of a single file.
File Format Exception	It is used to handle file format exception.
File Info	It is used to provide properties and instance methods for the creation, copying, deletion, moving and opening of files.
File Load Exception	It is used to handle file load exception.
File Not Found Exception	It is used to handle file not found exception.
File Stream	It provides a Stream for a file, supporting both synchronous and asynchronous read and write operations.
File System Event Args	It provides data for the directory events.
File System Info	It provides the base class for both File Info and Directory Info objects.
File System Watcher	It listens to the file system change notifications and raises events when a directory or file in a directory, changes.
Internal Buffer Overflow Exception	This class is used to handle internal buffer overflow exception.
Invalid Data Exception	It is used to handle invalid data exception.
IO Description Attribute	It sets the description visual designers can display when referencing an event, extender or property.
IO Exception	It is an exception class that handles I/O errors.
Memory Stream	It is used to create a stream whose backing store is memory.
Path	It performs operations on String instances that contain file or directory path information.
Path Too Long Exception	It is an exception class and used to handle path too long exception.
Pipe Exception	This exception class is used to handle pipe related exception.
Stream	It is used to provide a generic view of a sequence of bytes. It is an abstract class.
String Reader	It is used to implement a Text Reader that reads from a string.
String Writer	It is used to implement a TextWriter for writing information to a string. The information is stored in an underlying StringBuilder.
Stream Reader	It is used to implement a Text Reader that reads characters from a byte stream.
Text Reader	This class is used to represent a reader that can read a sequential series of characters.
Text Writer	This class is used to represent a writer that can write a sequential series of characters.
Unmanaged Memory Accessor	It is used to provide random access to unmanaged blocks of memory from managed code.
Unmanaged Memory Stream	It is used to get access to unmanaged blocks of memory from managed code.

Class	Description
Wait For Changed Result	It contains information on the change that occurred.

Delegates	Description
Error Event Handler	It represents the method that will handle the Error event of a File System Watcher object.
File System Event Handler	It represents the method that will handle the Changed, Created or Deleted event of a File System Watcher class.
Renamed Event Handler	It represents the method that will handle the renamed event of a File System Watcher class.

Delegates	Description
Drive Type	It is used to define constants for drive types including CDRom, Fixed, Network etc.
File Access	It is used to define constants for read, write or read/write access to a file.
File Attributes	It is used to provide attributes for files and directories.
File Mode	It is used to specify how the operating system should open a file.
File Options	It is used to represents advanced options for creating a File Stream object.
File Share	It is used to contain constants for controlling the kind of access other File Stream objects can have to the same file.
Handle Inheritability	It specifies whether the underlying handle is inheritable by child processes.
Notify Filters	It is used to specify changes to watch for in a file or folder.
Search Option	It is used to specify whether to search the current directory or the current directory and all subdirectories.
Seek Origin	It is used to specify the position in a stream to use for seeking.
Watcher Change Types	It changes that might occur to a file or directory.