VBScript·VBScript Method: File.OpenAsTextStream -- 追寻梦想＞编程乐园

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METHOD: File.OpenAsTextStream

object.OpenAsTextStream([iomode [, format]])

This method opens a specified file and returns an instance of a TextStream object that can then be manipulated - read from, written or appended to.

This method has two optional parameters. The first, iomode, has the following available values:

Constant	Value	Description
ForReading	1	File is opened for reading only
ForWriting	2	File is opened for writing and the contents of any existing file with the same name are overwritten
ForAppending	8	Opens the file and writes to the end of any existing text.

The second optional parameter, format, can have any of the following values:

Constant	Value	Description
TriStateUseDefault	-2	Uses the system default file format
TriStateTrue	-1	Opens the file using the Unicode format
TriStateFalse	0	Opens the file in AscII format

Code:
<%
dim filesys, demofile, txtstream
set filesys = CreateObject ("Scripting.FileSystemObject")
set demofile = filesys.CreateTextFile ("c:\somefile.txt", true)
set demofile = filesys.GetFile("c:\somefile.txt")
set txtstream = demofile.OpenAsTextStream (2, -2)
txtstream.Write "This will overwrite any text already in the file."
txtstream.Close
%>