CODEWITHSUNDEEP
asp.netregex
Radi R
Radi R

Reputation: 13

Is it possible to turn off case insensitivity using pattern only?

Regex has set option IgnoreCase. Is it possible to turn off case insensitivity using pattern only (like negation of (?i))?

In example below, find pattern for which result would be "aBaaaBBaaB".

string pattern = "???";
string input = "aAaaaAAaaA";
var regex = new Regex(pattern, RegexOptions.IgnoreCase);
var result = regex.Replace(input, "B");

Upvotes: 0

Views: 35

Answers (1)

Damien_The_Unbeliever
Damien_The_Unbeliever

Reputation: 239814

You can turn off options inline by using - before the option. E.g. the negation of (?i) is (?-i):

a minus sign (-) before an option or set of options turns those options off. For example, (?i-mn) turns case-insensitive matching (i) on, turns multiline mode (m) off, and turns unnamed group captures (n) off.

Upvotes: 1

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