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11/15/2004 at 01:13PM PST, ID: 21207624
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6.2

Replacing Text in a Large File

Asked by samitt in .NET

Tags: file, 10gb, large, text

I am using System.IO to read large text files (10GB). Each line in these files is a record, and the main pupose of this application is to validate the data. This I do by reading the file line by line and looping thru the lines and all's fine n dandy. Until now.

Here's where the problem is - for certain records (lines) in a very few files of these, I need to edit a part of the line. that is.. replace text in the middle for a few files.

The only way I could accomplish this so far was by using a separate Intermediate file and writing to it. This obviously is not the most optimized way to do it.

1. What would be ideal would be to edit text while reading the file.

2. If that cannot be done, I could Close the StreamReader and edit text at that particular position (using StreamWriter.basestream.seek method ??)

Anyway, neither 1 nor 2 is working for me. Can anyone help please.
[+][-]11/15/04 07:22 PM, ID: 12590126

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[+][-]11/16/04 06:01 AM, ID: 12593524

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[+][-]11/16/04 06:54 AM, ID: 12594196

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[+][-]11/16/04 07:22 AM, ID: 12594518

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[+][-]11/16/04 07:38 AM, ID: 12594670

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[+][-]11/16/04 09:39 AM, ID: 12596125

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About this solution

Zone: .NET
Tags: file, 10gb, large, text
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Solution Provided By: rdrunner
Participating Experts: 2
Solution Grade: C
 
 
 
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