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A Journal about the experiences I have developing little applications in C#, Perl, Html and Javascript and talking about things new things that I use. Always Geeky; Always Nerdy; Always poor Grammer!

I am a Software Analyst Developer working in Southport, England but living in Liverpool. I develop mainly in C# and ASP.Net. I have been developing comercial software for several years now. I maintain this site (hosted at SwitchMedia UK) as a way of exploring new technologies (such as AJAX) and just generally talking about techie geek issues. This site is developed through a host of Perl scripts and a liberal use of Javascript. I enjoy experimenting with new technologies and anything that I make I host here.

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Wednesday, March 08, 2006

Google Search: find file extension with regex in c#

I have had a search to my page where I know the reader probably didn't find what they were looking for.

This post is to hopefully let that user find the information that they are looking for better.

The Search term was "find file extension with regex in c#".

A simple regex that could be used in C# to find file extensions is:


This will find an extension that is at the end of the string. To find an extension anywhere in a string you can use:


A regex to find a three letter extension at the end of a line:


To find a three letter extension anywhere in a string you can use:


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