Many time we need to use sorting with our objects of custom classes.
Here I have given an example of how to sort an Person class on the basis of its attribute by implementing IComparable interface.using System;//Add refrence to Collections namespaceusing System.Collections;class Inventory : IComparable{ string name; double cost; int onhand; public Inventory(string n, double c, int h) { name = n; cost = c; onhand = h; } //Overriding the ToString() method to show the output formatted public override string ToString() { return String.Format("{0,-10}Cost: {1,6:C} On hand: {2}", name, cost, onhand); } // Implement the IComparable interface. public int CompareTo(object obj) { Inventory b; b = (Inventory)obj; return name.CompareTo(b.name); }}public class IComparableDemo{ public static void Main() { ArrayList inv = new ArrayList(); // Add elements to the list inv.Add(new Inventory("Pliers", 5.95, 3)); inv.Add(new Inventory("Wrenches", 8.29, 2)); inv.Add(new Inventory("Hammers", 3.50, 4)); inv.Add(new Inventory("Drills", 19.88, 8)); Console.WriteLine("Inventory list before sorting:"); foreach (Inventory i in inv) { Console.WriteLine(" " + i); } Console.WriteLine(); // Sort the list. inv.Sort(); Console.WriteLine("Inventory list after sorting:"); foreach (Inventory i in inv) { Console.WriteLine(" " + i); } }}Happy coding.Cheers.
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