123
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using System; using System.Collections; using System.Collections.Generic; // << add using System.Linq; using System.Text; using System.Threading.Tasks; namespace ListGenerics1 { class Program { static void Main(string[] args) { UseGenericsList(); Console.ReadLine(); } public static void UseGenericsList() { List <Person> people = new List<Person>() { new Person { Age = 123, FirstName="123", LastName="123" } }; // Count Console.WriteLine("Items in list: {0}",people.Count); //Enumerate foreach (Person p in people) { Console.WriteLine(p); } // Foreach... people.Add(new Person { Age = 123, FirstName = "123", LastName = "123" }); // Person[] arrayOfPeople = people.ToArray(); for (int i = 0; i < arrayOfPeople.Length; i++) { Console.WriteLine("First Names: {0}", arrayOfPeople[i].FirstName); } } } public class Person { public int Age{get;set;} public string FirstName { get; set; } public string LastName { get; set; } public Person() { } public Person(int age, string firstName, string lastName) { Age = age; FirstName = firstName; LastName = lastName; } } } |