Predicat

public class Employees : ICollection
{

    public List<Employee> emps = new List<Employee>();

    private class NamePredicat
    {
        public string NameToFind = "";
        public NamePredicat(string Name)
        {
            this.NameToFind = Name;
        }
        public bool Predicat(Employee E)
        {
            return E.Name.Equals(NameToFind);
        }
    }

    public Employee Search(string Name)
    {
        NamePredicat P = new NamePredicat(Name);
        Employee E =  emps.Find(P.Predicat);

        return E; // or null
    }
}