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asp.net Application of regular expression

1. Balanced group / recursive matching (?’ Group ‘), which is called the corresponding content of group, and counts it on the stack;(?’- Group ‘), and count the corresponding content named group out of the stack(?!) Zero width negative look ahead assertion. Since there is no suffix expression, attempts to match always failRegular example:,{0,1}”5″:\[[^\[\]]*(((?’Open’\[)[^\[\]]*)+((?’-Open’\])[^\[\]]*)+)*(?(Open)(?!))\],{0,1} Test […]