private static void FindPerson(IPhoneBookRepository phoneBook, string firstName, string lastName)
{
var person = phoneBook.FindPerson(firstName, lastName);
if (person != null)
{
Console.WriteLine("Result Person Found:");
Console.WriteLine(String.Format("Name: {0} Phone: {1}, Address: {2}",
person.FirstName + " " + person.LastName, person.PhoneNumber, person.Address));
}
}