Regulare Expressions VERY SLOW in .NET 2.0

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jabbera - 08 Mar 2006 15:17 GMT

We have a .NET 1.1 application that used many regular expressions to
see if small stings started with certin characters. When we ported this
application to .NET 2.0 the regular expressions ran many times slower
increasing our process time from 30 seconds in 1.1 to 30 minutes in
2.0. Has anyone else experienced this problem?

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Alvin Bruney - ASP.NET MVP - 08 Mar 2006 15:53 GMT

first i've heard of this. For your regex expressions, you may want to turn
the compiled switch on for further optimizations. In fact, if you are doing
a lot of regexing, you may benefit from declaring the regex object as a
static variable with compilation on.

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Alvin Bruney [MVP ASP.NET]

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> We have a .NET 1.1 application that used many regular expressions to
> see if small stings started with certin characters. When we ported this
> application to .NET 2.0 the regular expressions ran many times slower
> increasing our process time from 30 seconds in 1.1 to 30 minutes in
> 2.0. Has anyone else experienced this problem?

Reply to this Message

Regulare Expressions VERY SLOW in .NET 2.0

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