How do I use the IComparable interface?

Question

I need a basic example of how to use the IComparable interface so that I can sort in ascending or descending order and by different fields of the object type I\'m s

Answer 1

using System;
using System.Collections.Generic;
using System.Text;

namespace Sorting_ComplexTypes
{
    class Program
    {
        static void Main(string[] args)
        {
            Customer customer1 = new Customer {
                ID = 101,
                Name = "Mark",
                Salary = 2400,
                Type = "Retail Customers"
            };
            Customer customer2 = new Customer
            {
                ID = 102,
                Name = "Brian",
                Salary = 5000,
                Type = "Retail Customers"
            };
            Customer customer3 = new Customer
            {
                ID = 103,
                Name = "Steve",
                Salary = 3400,
                Type = "Retail Customers"
            };

            List customer = new List();
            customer.Add(customer1);
            customer.Add(customer2);
            customer.Add(customer3);

            Console.WriteLine("Before Sorting");
            foreach(Customer c in customer)
            {
                Console.WriteLine(c.Name);
            }

            customer.Sort();
            Console.WriteLine("After Sorting");
            foreach(Customer c in customer)
            {
                Console.WriteLine(c.Name);
            }

            customer.Reverse();
            Console.WriteLine("Reverse Sorting");
            foreach (Customer c in customer)
            {
                Console.WriteLine(c.Name);
            }
            }
        }
    }
    public class Customer : IComparable
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public int Salary { get; set; }
        public string Type { get; set; }

        public int CompareTo(Customer other)
        {
            return this.Name.CompareTo(other.Name);
        }
    }