I am having this below regex pattern. I want to allow these below characters as special characters.
- {
- }
- [
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Regex regEx = new Regex(@"^(?=.*[A-Z])(?=.*[!@#$%^&*()+_<>~-])(?=.*[0-9])(?=.*[a-z]).{8,15}$");
Is there a way to add them
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sgl
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What is your problem? The braces and square brackets [are allowed with your pattern](https://regex101.com/r/O6xJW7/1). – Wiktor Stribiżew Oct 30 '18 at 13:05
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1@WiktorStribiżew Are you sure about that? – Tim Biegeleisen Oct 30 '18 at 13:06
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@TimBiegeleisen And what do you think a `.` matches? – Wiktor Stribiżew Oct 30 '18 at 13:07
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`\]`,`\[`, `\{` and `\}` – Liam Oct 30 '18 at 13:07
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You're right...but I think the OP was asking how to add them to one of the character classes. In other words, _require_ that they appear. Water under the bridge anyway. – Tim Biegeleisen Oct 30 '18 at 13:08
1 Answers
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You'll need to escape them within the regex. Within a regular expression, you can refer to "\[" to get a '[' character, for example.
Note that in C, C#, C++, Java, etc, you usually need to double up the '\' character to escape the escape character. So when adding '[' to your regex, you would actually use "\\[". In your case you're using an @"" so you've escaped that trap.
jwismar
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2OP is using an `@` prefixed string - no need for doubling up slashes – James Thorpe Oct 30 '18 at 13:10
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None of the chars OP wants to add requires escaping if placed correctly inside the pattern. If they should be added at all since the current pattern already "allows" any char but line break chars. – Wiktor Stribiżew Oct 30 '18 at 13:11
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@JamesThorpe - you're right. In the regex hash, I missed that. I'll update response. – jwismar Oct 30 '18 at 13:16
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1@WiktorStribiżew I think he has a bug or two, but I'm trying to address what I believe is the underlying question. – jwismar Oct 30 '18 at 13:16