How to find whether a string contains any of the special characters?

Question

I want to find whether a string contains any of the special characters like !,@,#,$,%,^,&,*,(,)....etc.

How can I do that without looping thorugh all the charact

Answer 1

public static bool HasSpecialCharacters(string str)
{
  string specialCharacters = @"%!@#$%^&*()?/>.<,:;'\|}]{[_~`+=-" +"\"";
  char[] specialCharactersArray = specialCharacters.ToCharArray();

  int index = str.IndexOfAny(specialCharactersArray);
  //index == -1 no special characters
  if (index == -1)
    return false;
  else
    return true;
}