Solved

Read large text File and write out 5000 records

Posted on 2008-10-24
1
465 Views
Last Modified: 2012-05-05
I have a 1 Gig file with ~ 17 million lines called truex.txt.  I need to read or stream in the file ,and look for a string of "000000000000".  When the line contains that string, write that line out to a file c:\temp\sample.txt.   I need to stop after writing out 5000 lines.

I have not done VB in years, so a code snippet would be appreciated.

Thank you,
0
Comment
Question by:ddpleasant
1 Comment
 
LVL 32

Accepted Solution

by:
Robberbaron (robr) earned 500 total points
ID: 22801526
vb6.

also can be done using VBS & FSO.
see authot comment at end of http://www.experts-exchange.com/Programming/Languages/Visual_Basic/Q_23768664.html?cid=238#a22746111


Sub GetTest()
 
dim sFileIn as string, sFileOut as string, sDataLine as string
dim lFi as long, lFo as long, lCount as long
 
sFileIn= "truex.txt"
sFileOut = "c:\temp\sample.txt"
 
lFi=freefile
open sFileIn for input as lfi
 
lFo = FreeFile
open sFileOut for Output as lFo
 
do while not eof(lfi) and lCount < 5000
 
    line input #lFi, sDataLine
    if instr(sDataLine,"000000000000") > 0 then
         'found desired line
         print #lFo,sDataLine
         lCount = lCount+1
    end if
loop
 
close lFo
close lFi
 
end sub

Open in new window

0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction While answering a recent question (http://www.experts-exchange.com/Q_27402310.html) in the VB classic zone, I wrote some VB code in the (Office) VBA environment, rather than fire up my older PC.  I didn't post completely correct code o…
Introduction While answering a recent question about filtering a custom class collection, I realized that this could be accomplished with very little code by using the ScriptControl (SC) library.  This article will introduce you to the SC library a…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question