Pasted

www.example.com/a-292-some-text-here  // 292www.example.com/a-2-asdfss       // 2www.example.com/a-44-333      // 44
 string input = "www.example.com/a-292-some-text-here";Match match = Regex.Match(input, @"d+");if (match.Success){    int id = int.Parse(match.Value);    // Use the id...}else{    // Error!}