Program to get total number of elements in C#

using System;
using System.Collections;

namespace ConsoleApplication1
{
    
    class Program
    {
        static void Main()
        {
            Stack S = new Stack(5);

            S.Push(10);
            S.Push(20);
            S.Push(30);
            S.Push(40);

            Console.WriteLine("Total items in stack: " + S.Count);
        }
    }
}

Output

Total items in stack: 4

In this program, we are pushing 4 elements (10,20,30,40) in stack. And then, getting the total number of elements of stack using Count property of Stack.

Note: In above program, to use 'Stack' class, we need to include System.Collection namespace.