[Solved] Help with a Regular Expression

Posted 15 Jun '12 - 10:25

Member 9014541334

Edited 15 Jun '12 - 10:40

Solution 2

You can go simple and just

Regex r = new Regex(@"\(.*\)");
var e = r.Matches(s);

e is a collection of matches, and will include the "()"

Will not requer

Regex r = new Regex(@"\((.*)\)");
var e = r.Match(s);

e.Groups will contain all matches, the second item will your result

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Posted 15 Jun '12 - 11:04

Clifford Nelson45.4K

Comments

Manas Bhardwaj - 15 Jun '12 - 20:24

Correct +5!

Clifford Nelson - 15 Jun '12 - 22:37

Thanks

SAKryukov - 15 Jun '12 - 21:41

5ed, --SA

Clifford Nelson - 15 Jun '12 - 22:37

Thanks

Manas Bhardwaj - 21 Jun '12 - 3:16

correct +5

Solution 3

I think the matching with prefix and suffix options of Regex can be used to extract only the required value from the parentheses as shown below:

string text = @"STRING[261] Directory(\FTP\OSP_003\)\nSTRING[9] FileName(SysParaI)\nSTRING[4] FileExtension(002)";
Match match = Regex.Match(text, @"(?<=\(SysParaI\)[^)(]*\()\d+(?=\))",
                 RegexOptions.CultureInvariant);
if (match.Success)
	Console.WriteLine (match.Value);
//Output
//002

It can be tested here http://regexhero.net/tester/[^]

The above pattern does not match if there are spaces around 002 and/or SysParaI like ( SysParaI ) ( 002 ).

To match in such case the following pattern can be used.
(?<=\(\s*SysParaI\s*\)[^)(]*\(\s*)\d+(?=\s*\)

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Posted 15 Jun '12 - 14:11

VJ Reddy38.3K

Comments

Manas Bhardwaj - 15 Jun '12 - 20:24

Correct +5!

VJ Reddy - 15 Jun '12 - 20:32

Thank you, Manas :)

SAKryukov - 15 Jun '12 - 21:41

Yes, a 5. --SA

VJ Reddy - 15 Jun '12 - 22:38

Thank you, SA :)

taha bahrami - 16 Jun '12 - 3:56

very good! 5!

VJ Reddy - 16 Jun '12 - 4:06

Thank you, taha :)

losmac - 20 Jun '12 - 10:23

Good answer, my 5!

VJ Reddy - 20 Jun '12 - 12:19

Thank you, losmac :)

Sandeep Mewara - 21 Jun '12 - 16:46

Correct 5!

VJ Reddy - 21 Jun '12 - 19:42

Thank you, Sandeep :)

Espen Harlinn - 23 Jun '12 - 4:07

5'ed!

VJ Reddy - 23 Jun '12 - 8:09

Thank you, Espen :)

Solution 1

If this is a single string, I would think "SysParaI\).*?\((\d+)\)" should work, if you set RegexOptions.Multiline (see more about that here[^])

If each line is it's own string, check the previous one for the presence of SysParaI then use "\((\d+)\)

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Posted 15 Jun '12 - 10:54

lewax0041.3K

Comments

Member 9014541 - 15 Jun '12 - 16:59

No... its a single long string from a flat txt file and there is only one SysPara in the whole file so this should work... THANKS!!!!

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Help with a Regular Expression

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Help with a Regular Expression

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