Check if a string has at least one number in it using LINQ

Question

I would like to know what the easiest and shortest LINQ query is to return true if a string contains any number character in it.

Thanks Jobi Joy

Answer 1

Try this

public static bool HasNumber(this string input) {
  return input.Where(x => Char.IsDigit(x)).Any();
}

Usage

string x = GetTheString();
if ( x.HasNumber() ) {
  ...
}

Answer 2

"abc3def".Any(c => char.IsDigit(c));

Update: as @Cipher pointed out, it can actually be made even shorter:

"abc3def".Any(char.IsDigit);