22/04/2009 : How To Read And Write Text Files In VB.NET
This example code shows how you can use the StreamReader class to read an write standard text files. The code below can be used as a basis for reading lines from one file, processing them and then writing them back out to another file.
I have used this code as a base for processing CSV, HTML and XML files.
On Error GoTo ErrorHandler
Dim oRead As System.IO.StreamReader
Dim oWrite As System.IO.StreamWriter
Dim strLine
Dim intLineCounter
intLineCounter = 0
oRead = IO.File.OpenText("input.txt")
oWrite = IO.File.CreateText("output.txt")
Do While oRead.Peek() <> -1
strLine = oRead.ReadLine
' Process or modify the strLine variable here
' before it is written to the output file
oWrite.WriteLine(strLine)
intTotalCounter = intTotalCounter + 1
Loop
oWrite.Close() ' Close output file
oRead.Close() ' Close input file
Exit Sub
ErrorHandler:
msgbox("There was an error!")
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Author : Matt Hawkins Last Edited By : Matt Hawkins Permalink : How To Read And Write Text Files In VB.NET
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