| LastIndexOfAnyRegEx(String, IEnumerableString, RegexOptions) | Reports the zero-based index of the last occurrence in this instance of any Regex expression in a specified array. |
| LastIndexOfAnyRegEx(String, IEnumerableString, Int32, RegexOptions) | Reports the zero-based index of the last occurrence in this instance of any Regex expression in a specified array. |
| LastIndexOfAnyRegEx(String, IEnumerableString, Int32, Int32, RegexOptions) | Reports the zero-based index of the last occurrence in this instance of any Regex expression in a specified array. |