Methods such as string.Contains and string.IndexOf allow you to search for an occurrence of either a single char or a substring within a string. If you'd like to search for an occurrence of a single char, it is recommended that you use the appropriate method that takes a char as a parameter rather than a string as the former approach is more performant and recommended.
Methods such as
string.Containsandstring.IndexOfallow you to search for an occurrence of either a single char or a substring within astring. If you'd like to search for an occurrence of a single char, it is recommended that you use the appropriate method that takes acharas a parameter rather than astringas the former approach is more performant and recommended.