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)

Syntax

Public Sub New ( _
    path As String, _
    mode As FileMode _
)

public FileStream(
    string path,
    FileMode mode
)

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.

Exception	Condition
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 nullNothingnullptra null reference (Nothing in Visual Basic).
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.

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.