FileStream Constructor (String, FileMode)

FileStream Constructor (String, FileMode)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Initializes a new instance of the FileStream class with the specified path and creation mode.

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

public FileStream(
	string path,
	FileMode mode
)

Parameters

path
Type: System.String
A relative or absolute path for the file that the current FileStream object will encapsulate.
mode
Type: System.IO.FileMode
A FileMode constant that determines how to open or create the file.

ExceptionCondition
ArgumentException

path is an empty string (""), contains only white space, or contains one or more invalid characters.

-or-

path refers to a non-file device, such as "con:", "com1:", "lpt1:", etc. in an NTFS environment.

NotSupportedException

path refers to a non-file device, such as "con:", "com1:", "lpt1:", etc. in a non-NTFS environment.

ArgumentNullException

path is null.

SecurityException

The caller does not have the required permission.

FileNotFoundException

The file cannot be found, such as when mode is FileMode.Truncate or FileMode.Open, and the file specified by path does not exist. The file must already exist in these modes.

IOException

An I/O error occurs, such as specifying FileMode.CreateNew and the file specified by path already exists.

-or-

The stream has been closed.

DirectoryNotFoundException

The specified path is invalid, such as being on an unmapped drive.

PathTooLongException

The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.

ArgumentOutOfRangeException

mode contains an invalid value.

Version Notes

Windows Phone

 This member has a SecurityCriticalAttribute attribute. This attribute restricts this member to internal use. Application code that uses this member throws a MethodAccessException.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

Show:
© 2017 Microsoft