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Nongeneric Collection:Stack By:Tanuj Kumar

Nongeneric Collection:Stack

stack:non generic collection

The System.Collections namespace contains interfaces and classes that define Non generic collections, which allow users to  collections.
An introduction to DOT NET:
Non Generic collection: Stack
Stackis LIFO Last in first out.
Here stack is used to save data and retrieved it in LIFO manner.
You can run program and see the working procedure of it.
Nongeneric Collection:Stack



using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;

namespace stackcollection
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        Stack st = new Stack();
        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text =="")
            {

                MessageBox.Show("enter value in textbox");
            }
            else
            {
                st.Push(textBox1.Text);
                MessageBox.Show("inserted");
            }
           
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (st.Count > 0)
            {
                Object obj = new Object();
                obj = st.Pop();
                MessageBox.Show(obj.ToString());
            }
            else {

                MessageBox.Show("no element in stack");
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (st.Count <= 0)
            {

                MessageBox.Show("stack is empty");
            }
            else
            {
                Object obj = new Object();
                obj = st.Peek();
                MessageBox.Show(obj.ToString());
            }
        }

        private void button5_Click(object sender, EventArgs e)
        {
            if (st.Count <=0)
            {

                MessageBox.Show("stack is empty");
            }
            else
            {
                if (st.Contains(textBox2.Text))
                {

                    MessageBox.Show("available");
                }
                else
                {
                    MessageBox.Show("not available");
                }
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            MessageBox.Show(st.Count.ToString());
        }
    }
}
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