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Pulling a file extension

Posted on 2009-07-05
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Last Modified: 2012-05-07
In c# what is an easy way to find a file extension.

My current way is kinda messy, and is very easy for the user to mess up.

The exact thing required is for the program to go forward one file, and look at a file of extension *.F*  where the second star is a number 4-10

Any Suggestions?
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Question by:cotj73
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3 Comments
 
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Rahul Goel ITIL earned 700 total points
ID: 24782526
You can use RegEx to achieve the same.
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by:vaibhav_dw
vaibhav_dw earned 700 total points
ID: 24782547
Hi

Are you trying to extract the extension from the filename as the string or you have the filestream?

If you have just the filename as the string then you can traverse the string backwords till the period(.) and then traverse extactly 3 characters to get the extension. This is simply playing with the string.

Could you please tell exactly what do you have as a file so that I can help you out.

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LVL 7

Assisted Solution

by:Raghu Mutalikdesai
Raghu Mutalikdesai earned 600 total points
ID: 24783299
// path is your file path
System.IO.Path.GetExtension(path)
System.IO.Path.GetFileNameWithoutExtension(path)
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