Reading appended line from bottom of logfile

Question

Scenario is the following:

A (weather) service dumps sensor data into a log file/text file.
The new readings are appended to the bottom of a given (existing) file
New data is added at regular intervals (interval may or may not be known)

I need to parse the new information/line and send it off to another service.

I don't want to read the whole file every time, unless I have to.

EDIT: Sorry for the bad wording. "unless I have to" should be understood as if there is no other way around. I have seen the post/answer referenced and it seems a little extensive.

Framework is 4.5.x.

Thank you.

Thank you for sharing your requirements. Any attempt to solve them? — Adriano Repetti, Oct 06 '14 at 12:10

score 2 · Answer 1 · edited May 23 '17 at 12:11

2

To get the the last line of a text file you can use this

File.ReadLines(myFileName).Last();

This is the simplest method, but is inefficient. You can write your own parser as show here

edited May 23 '17 at 12:11

Community

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answered Oct 06 '14 at 12:09

David Pilkington

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@AdrianoRepetti "unless I have to" being the operative phrase – David Pilkington Oct 06 '14 at 12:11
@AdrianoRepetti unless he wants to code this http://stackoverflow.com/questions/452902/how-to-read-a-text-file-reversely-with-iterator-in-c-sharp , he has to – David Pilkington Oct 06 '14 at 12:12
Fair enough but I'd elaborate little bit more... – Adriano Repetti Oct 06 '14 at 12:12
@AdrianoRepetti amended the answer – David Pilkington Oct 06 '14 at 12:14

Reading appended line from bottom of logfile

1 Answers1