Delete the last instance of a certain string from a text file without changing the other instances o

Posted by fraXis on Stack Overflow See other posts from Stack Overflow or by fraXis
Published on 2010-05-20T21:54:25Z Indexed on 2010/05/20 22:00 UTC
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c#

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regex

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text

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string

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replace

Hello,

I have a C# program where I am using a lot of RegEx.Replace to replace text in my text file.

Here is my problem.

In my text file, I have a code such as "M6T1". This code is listed in numerous places in the text file.

However, I only want to delete it from the bottom (last instance) in the text file. There will always be a "M6T1" at the bottom of the text file, but it is not always the last line. It could be the 3rd line from the bottom, the 5th line from the bottom etc.

I only want to get rid of the last instance of "M6T1" so RegEx.Replace won't work here. I don't want to interfer with the other "M6T1"'s in the other locations in the text file.

Can someone please give me a solution to this problem?

Thanks

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