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using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace IComparerExample { class Program { static void Main(string[] args) { Car[] Cars = { new Car("A",123,1), new Car("123",123,3), new Car("C",123,7), new Car("123",123,4), new Car("123",123,2) }; Console.WriteLine("Not Sorted"); foreach (var car in Cars) { Console.WriteLine(car.Name); } // << not sorted //Array.Sort(Cars, new NameComparer()); Array.Sort(Cars,Car.SortByName); Console.WriteLine("Sorted"); foreach (var car in Cars) { Console.WriteLine(car.Name); } // << sorted Console.ReadLine(); } } public class Car { public int ID { get; set; } public int Speed { get; set; } public string Name { get; set; } public static IComparer SortByName { get { return (IComparer)new NameComparer(); } // <<< IComparer in property } public Car(string name, int speed, int id) { Name = name; Speed = speed; ID = id; } } public class NameComparer : IComparer { public int Compare(object x, object y) { Car c1 = x as Car; Car c2 = y as Car; if (c1 != null && c2 != null) { return string.Compare(c1.Name, c2.Name); } else throw new ArgumentException("Param is not Car"); //throw new NotImplementedException(); } } } |