regex - Foreign language characters in Regular expression in C#

Question

In C# code, I am trying to pass chinese characters: " 中文ABC123".

When I use alphanumeric in general using "^[a-zA-Z0-9s]+$",

it doesn't pass for "中文ABC123" and regex validation fails.

What other expressions do I need to add for C#?

Answer 1

To match any letter character from any language use:

p{L}

If you also want to match numbers:

[p{L}p{Nd}]+

p{L} ... matches a character of the unicode category letter.
                it is the short form for [p{Ll}p{Lu}p{Lt}p{Lm}p{Lo}]
                  p{Ll} ... matches lowercase letters. (abc)
                  p{Lu} ... matches uppercase letters. (ABC)
                  p{Lt} ... matches titlecase letters.
                  p{Lm} ... matches modifier letters.
                  p{Lo} ... matches letters without case. (中文)

p{Nd} ... matches a character of the unicode category decimal digit.

Just replace: ^[a-zA-Z0-9s]+$ with ^[p{L}0-9s]+$