C# program to check the performance of Generics.

This program shows the difference between Generics and Non-Generic . It checks the performance of Generics. Generics are faster than Non-Generics it takes less time to add and retrieve any type of values. Below program gives the demonstration on performance and shows how powerful is Generics.

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;

namespace GenericsPerformance
{
    class Program
    {
        static void Main(string[] args)
        {
            NonGenericMethod();
            GenericMethods();
        }



        static void NonGenericMethod()
        {
            long OperarionTime = 0;
            ArrayList list = new ArrayList();
            Stopwatch sw = new Stopwatch();
            sw.Start();
            for (int i = 1; i <= 10000000; i++)
            {
                list.Add(i);
            }
         
            OperarionTime = sw.ElapsedMilliseconds;
            Console.WriteLine("arrayList {0} values add time is {1} milli",list.Count,OperarionTime);
            sw.Restart();
            foreach (int i in list)
            {
                int value = i;
            }
            OperarionTime = sw.ElapsedMilliseconds;
            Console.WriteLine("array list {0} values retrive time is {1} milli",list.Count,OperarionTime);
            Console.WriteLine("-------------------------------------------------------------------");
        }
        static void GenericMethods()
        {
            long OperarionTime = 0;
            List<int> list = new List<int>();
            Stopwatch sw = new Stopwatch();
            sw.Start();
            for (int i = 1; i <= 10000000; i++)
            {
                list.Add(i);
            }
            OperarionTime = sw.ElapsedMilliseconds;
            Console.WriteLine("list<> {0} values add time is {1} milli",list.Count,OperarionTime);
            sw.Restart();
            foreach (int i in list)
            {
                int value = i;
            }
            OperarionTime = sw.ElapsedMilliseconds;
            Console.WriteLine("list<> {0} values retreve time is {1} milli", list.Count, OperarionTime);
        }
    }
}

Note:- Here ArrayList is Non-generic collection class and List<int> is Generic class.