danielrozo

 public static string ToBase62(this long input)
 {
     string baseChars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
     string r = string.Empty;
     int targetBase = baseChars.Length;
     do
     {
         r = string.Format("{0}{1}",
             baseChars[(int)(input % targetBase)],
             r);