Stack Concept in .Net

A collection that works on the Last In First Out (LIFO) principle,
i.e., the last item inserted is the first item removed from the collection. 
Push - To add element and 
Pop – To Remove element

Example

using System;
using System.Collections;

class Test
{
    static void Main()
    {
        Stack stack = new Stack();
        stack.Push(2);
        stack.Push(4);
        stack.Push(6);
       
        while(stack.Count != 0)
        {
            Console.WriteLine(stack.Pop());
        }
    }
}

Output
6
4
2