Replace text in string with delimeters using Regex

Posted by user1057735 on Stack Overflow See other posts from Stack Overflow or by user1057735
Published on 2011-11-21T12:07:13Z Indexed on 2011/11/21 17:50 UTC
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I have a string something like,

string str = "(50%silicon +20%!(20%Gold + 80%Silver)| + 30%Alumnium)";

I need a Regular Expression which would Replace the contents in between ! and | with an empty string. The result should be (50%silicon +20% + 30%Alumnium).

If the string contains something like (with nested delimiters):

string str = "(50%silicon +20%!(80%Gold + 80%Silver + 20%!(20%Iron + 80%Silver)|)|
              + 30%Alumnium)";

The result should be (50%silicon +20% + 30%Alumnium) - ignoring the nested delimiters.

I've tried the following Regex, but it doesn't ignore the nesting:

Regex.Replace(str , @"!.+?\|", "", RegexOptions.IgnoreCase);

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