Best way to split string by last occurrence of character?

Question

Let\'s say I need to split string like this:

Input string: \"My. name. is Bond._James Bond!\" Output 2 strings:

1. \"My. name. is Bond\"
2. \"_James

Answer 1

string s = "My. name. is Bond._James Bond!";
int idx = s.LastIndexOf('.');

if (idx != -1)
{
    Console.WriteLine(s.Substring(0, idx)); // "My. name. is Bond"
    Console.WriteLine(s.Substring(idx + 1)); // "_James Bond!"
}