FileStream Constructor (String, FileMode, FileAccess)

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Initializes a new instance of the FileStream class with the specified path, creation mode, and read/write permission.

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

public FileStream(
	string path,
	FileMode mode,
	FileAccess access
)

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 constant that determines how to open or create the file.
access
Type: System.IO..::..FileAccess
A constant that determines how the file can be accessed by the FileStream object. This gets the CanRead and CanWrite properties of the FileStream object. CanSeek is true if path specifies a disk file.

The constructor is given read/write access to the file, and it is opened sharing Read access (that is, requests to open the file for writing by this or another process will fail until the FileStream object has been closed, but read attempts will succeed). The buffer size is set to the default size of 8192 bytes (8 KB).

CanSeek is true for all FileStream objects that encapsulate files. If path indicates a device that does not support seeking, the CanSeek property on the resulting FileStream is false. For additional information, see CanSeek.

FileShare.Read is the default for those FileStream constructors without a FileShare parameter.

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