How to use IndexOf() method of List<object>

Question

All the examples I see of using the IndexOf() method in List are of basic string types. What I want to know is how to return the index of

Answer 1

public int FindIndex(Predicate match);

Using lambdas:

employeeList.FindIndex(r => r.LastName.Equals("Something"));

Note:

// Returns:
//     The zero-based index of the first occurrence of an element
//     that matches the conditions defined by match, if found; 
//     otherwise, –1.