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Wednesday, November 16, 2011

ASp TextStream

The TextStream Object

The TextStream object is used to access the contents of text files.

The following code creates a text file (c:\test.txt) and then writes some text to the file (the variable f is an instance of the TextStream object):
<%
dim fs,f
set fs=Server.CreateObject("Scripting.FileSystemObject")
set f=fs.CreateTextFile("c:\test.txt",true)
f.WriteLine("Hello World!")
f.Close
set f=nothing
set fs=nothing
%>

To create an instance of the TextStream object you can use the CreateTextFile or OpenTextFile methods of the FileSystemObject object, or you can use the OpenAsTextStream method of the File object.

The TextStream object's properties and methods are described below:
Properties
Property     Description
AtEndOfLine     Returns true if the file pointer is positioned immediately before the end-of-line marker in a TextStream file, and false if not
AtEndOfStream     Returns true if the file pointer is at the end of a TextStream file, and false if not
Column     Returns the column number of the current character position in an input stream
Line     Returns the current line number in a TextStream file
Methods
Method     Description
Close     Closes an open TextStream file
Read     Reads a specified number of characters from a TextStream file and returns the result
ReadAll     Reads an entire TextStream file and returns the result
ReadLine     Reads one line from a TextStream file and returns the result
Skip     Skips a specified number of characters when reading a TextStream file
SkipLine     Skips the next line when reading a TextStream file
Write     Writes a specified text to a TextStream file
WriteLine     Writes a specified text and a new-line character to a TextStream file
WriteBlankLines     Writes a specified number of new-line character to a TextStream file