FileOpen Method (String, FileMode, FileAccess, FileShare, Int32, Boolean)
[AlphaFS] Opens a FileStream
on the specified path using the specified creation mode, read/write and sharing permission, and buffer size.
AlphaFS (in AlphaFS.dll) Version: 2.0
public static FileStream Open(
Public Shared Function Open (
path As String,
mode As FileMode,
access As FileAccess,
share As FileShare,
bufferSize As Integer,
useAsync As Boolean
) As FileStream
static FileStream^ Open(
static member Open :
path : string *
mode : FileMode *
access : FileAccess *
share : FileShare *
bufferSize : int *
useAsync : bool -> FileStream
- Type: SystemString
The file to open.
- Type: System.IOFileMode
A constant that determines how to open or create the file.
- Type: System.IOFileAccess
A FileAccess value that specifies the operations that can be performed on the
- Type: System.IOFileShare
A constant that determines how the file will be shared by processes.
- Type: SystemInt32
A positive Int32 value greater than 0 indicating the buffer size. The
default buffer size is 4096.
- Type: SystemBoolean
Specifies whether to use asynchronous I/O or synchronous I/O. However, note that the
underlying operating system might not support asynchronous I/O, so when specifying true, the handle might be
opened synchronously depending on the platform. When opened asynchronously, the BeginRead and BeginWrite methods
perform better on large reads or writes, but they might be much slower for small reads or writes. If the
application is designed to take advantage of asynchronous I/O, set the useAsync parameter to true. Using
asynchronous I/O correctly can speed up applications by as much as a factor of 10, but using it without
redesigning the application for asynchronous I/O can decrease performance by as much as a factor of 10.
on the specified path, having the specified mode with read, write, or read/write
access and the specified sharing option.