Help a guy out with RegEx

Wednesday, October 20, 2004

.NET

OK, I get how to replace a group in Regex.Replace something like this:

Regex.Replace(@"(blah)(blah2)(blah3)", "new$2new", RegexOptions.IgnoreCase)

...where the result is "newblah2new"

But how would use replace "blah2" with something dynamically generated, namely another string based on "blah2"? I'm tripping all over the examples in the docs and need a little help.

4 Comments

Look at:

public static string Replace(

string input,

string pattern,

string replacement,

RegexOptions options

);

Andrey Skvortsov - Wednesday, October 20, 2004 11:41:00 AM
Sorry,doc error "string replacement," is "MatchEvaluator evaluator,"

Andrey Skvortsov - Wednesday, October 20, 2004 11:42:00 AM
You can concatenate the string, just be careful to escape characters with have a specific meaning for regular expressions:

pattern = String.Format("(blah)(%s)(blah3)",Regex.Escape(somethingDunamicallyGenerated"));

Alain Tésio - Wednesday, October 20, 2004 1:14:00 PM
match evaluator is the way to go, i've used it several times

Eric Newton - Monday, October 25, 2004 3:14:00 PM

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