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File open for input and output vb.net

Posted on 2009-04-01
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Last Modified: 2012-05-06
In VB6 I could open a file for input then open a file for output and then write any part of a line from the input file to the output file see sample below.  

I want to do exactly the same thing in vb.net,  I have found example which show me how to read a file and write static text to a file but I can not find any help on how to write a string from the file I just opened and read.

Any help greatlt appreciated.
Private Sub Form_Load()
 

Open "C:\Users.ini" For Input As #1

Open "C:\StationID.ini" For Input As #2
 
 

Do While EOF(2) = False And EOF(1) = False

Open "C:\Config.NT" For Output As #3

Line Input #2, Temp1$

Print #3, "dos = high, umb"

Print #3, ";device=%SystemRoot%\system32\himem.sys"

Print #3, ";device=%SystemRoot%\system32\emm386.exe"

Print #3, "EMM =RAM"

Print #3, "FILES=80"

Print #3, "device=C:\utils\netid.exe /d:" & Temp1$

Print #3, ""

Print #3, "REM Added by Pervasive.SQL V8 install:"

Print #3, "DEVICE=C:\PVSW\BIN\BTRDRVR.SYS"
 

Close #3
 

Line Input #1, Temp$

FileSystem.MkDir "C:\WorkStationIDs\" & Temp$
 

FileSystem.FileCopy "C:\Config.NT", "C:\WorkStationIDs\" & Temp$ & "\Config.NT"

Loop
 
 

Unload Me
 

End Sub

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Question by:smasshed
2 Comments
 
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Accepted Solution

by:
jpaulino earned 500 total points
ID: 24040184
In .NET you can use StreamReader and StreamWriter to do that!
Example:

        Dim fileName As String = "d:\test.txt"

        Dim fileNameOutput As String = "d:\testOutput.txt"
 

        Using writer As New IO.StreamWriter(fileNameOutput)
 

            Using reader As New IO.StreamReader(fileName)
 

                While Not reader.EndOfStream()

                    Dim result As String = reader.ReadLine()

                    writer.WriteLine(result & " some extra text")

                End While
 

            End Using
 

        End Using

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Author Closing Comment

by:smasshed
ID: 31565338
Easy when you know how, thanks alot.
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