| LastIndexOf(T) | Searches for the specified object and returns the zero-based index of the last occurrence within the entire ListT. |
| LastIndexOf(T, Int32) | Searches for the specified object and returns the zero-based index of the last occurrence within the range of elements in the ListT that extends from the first element to the specified index. |
| LastIndexOf(T, Int32, Int32) | Searches for the specified object and returns the zero-based index of the last occurrence within the range of elements in the ListT that contains the specified number of elements and ends at the specified index. |