Extended
There are three overloads for this method.
Overload List
| FindIndex(PredicateT) | Search for the first item that matches the conditions defined by the specified predicate and return its zero-based index. |
| FindIndex(Int32, PredicateT) | Search for the first item that matches the conditions defined by the specified predicate between the starting index and the end of the collection and return its zero-based index. |
| FindIndex(Int32, Int32, PredicateT) | Search for the first item that matches the conditions defined by the specified predicate between the starting index and the given number of items and return its zero-based index. |