April 2002
Intermediate to advanced
688 pages
19h 51m
English
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Name
FileOpen Procedure
Class
Microsoft.VisualBasic.FileSystem
Syntax
FileOpen(filenumber, filename, mode, access, share, recordlength)-
filenumber(required; Integer) An available file number.
-
filename(required; String) The name of the file to open, along with an optional path.
-
mode(optional;OpenModeenum) The file-access mode. Options are: OpenMode.Append, OpenMode. Binary, OpenMode.Input, OpenMode.Output, or OpenMode.Random (the default value).
-
access(optional;OpenAccessenum) Specifies the allowable operations by the current process. Options are:
OpenAccess.Default,OpenAccess.Read,OpenAccess.ReadWrite(the default value), orOpenAccess.Write.-
share(optional;OpenShareenum) Specifies the allowable operations by other processes. Options are:
OpenShare.Shared(the default value),OpenShare.LockRead,OpenShare.LockWrite, orOpenShare.LockreadWrite.-
recordlength(optional; Integer (at most, 32767) The length of the record (for random access) or of the I/O buffer (for sequential access).
Description
Opens a disk file for reading and/or writing
Rules at a Glance
There are three modes of file access: sequential, binary, and random. The Input, Output, and Append access modes are sequential access modes. Sequential access is designed for text files consisting of individual Unicode characters (and control codes). Most of the file-manipulation functions (LineInput, Print, PrintLine, and so on) apply to files opened for sequential access. Random access is designed to be used with ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.