FileInfo.Open Method (FileMode, FileAccess, FileShare)

FileInfoOpen Method (FileMode, FileAccess, FileShare)

Opens a file in the specified mode with read, write, or read/write access and the specified sharing option.

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0

Syntax

public FileStream Open(
	FileMode mode,
	FileAccess access,
	FileShare share
)

mode: Type: System.IOFileMode
A FileMode constant specifying the mode (for example, Open or Append) in which to open the file.
access: Type: System.IOFileAccess
A FileAccess constant specifying whether to open the file with Read, Write, or ReadWrite file access.
share: Type: System.IOFileShare
A FileShare constant specifying the type of access other FileStream objects have to this file.

Type: FileStream
A FileStream object opened with the specified mode, access, and sharing options.

Exceptions

Exception	Condition
SecurityException	The caller does not have the required permission.
ArgumentException	path is empty or contains only white spaces.
FileNotFoundException	The file is not found.
ArgumentNullException	One or more arguments is null.
UnauthorizedAccessException	path is read-only or is a directory.
DirectoryNotFoundException	The specified path is invalid, such as being on an unmapped drive.
IOException	The file is already open.