Cannot get regular expression work correctly with new line

Asked Dec 07 '17 at 22:51

Active Dec 07 '17 at 22:51

Viewed 19 times

I am using regular expression for preventing any html tags to be entered in text box on client side. It is:

[RegularExpression("^(?!.*<[^>]+>).*"

But when I want to have new line by enter key, it also triggers notification. Any idea how to make it accept multi line input?

asked Dec 07 '17 at 22:51

Hadee

`"^(?![\s\S]*]+>)[\s\S]*"` – Wiktor Stribiżew Dec 07 '17 at 23:05
It doesn't accept "\s\S" : `Error CS1009 Unrecognized escape sequence` – Hadee Dec 07 '17 at 23:24
1

You just must use a literal ``\`` symbol. Double it inside a string literal. `"^(?![\\s\\S]*]+>)[\\s\\S]*"` – Wiktor Stribiżew Dec 07 '17 at 23:29

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