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How to run regular expressions faster in C#

Senthil Kumar user avatar by
Senthil Kumar
·
Apr. 08, 15 · Interview
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If you want the regular expression to run faster , you can set the RegexOptions.Compiled value to the regex constructor. This will compile the regex in to their own assembly which will run a little faster.

Below is a sample code snippet demonstrating the usage of RegexOptions.Compiled.

//  Validating a Zip codes in C# using Regular Expression
2
string GKZipCode = @"^\d{5}(-?\d{4})?$";
3
Regex regex = new Regex(GKZipCode, RegexOptions.Compiled);
4
bool Matching = regex.IsMatch("15689");
5
Console.WriteLine(Matching);
6
Console.ReadLine();


Snippet (programming) Assembly (CLI)

Published at DZone with permission of Senthil Kumar, DZone MVB. See the original article here.

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