Stack,Queue,SortedList

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections;

public partial class _Default : System.Web.UI.Page
{

    protected void Page_Load(object sender, EventArgs e)
    {

        Stack st = new Stack();
        st.Push("A");
        st.Push("B");
        st.Push("C");
        Response.Write("------Stack     ---------<br>");
        foreach (string str in st.ToArray())
        {
            Response.Write(str + "<br>");
        }

        Response.Write("-----pos----------<br>" + st.Pop().ToString() + "<br><br>");//             

        foreach (string str in st.ToArray())
        {
            Response.Write(str + "<br>");
        }

        Response.Write("-------peek--------<br>" + st.Peek() + "<br><br>");

        foreach (string str in st.ToArray())
        {
            Response.Write(str + "<br>");
        }


        Queue qt = new Queue();
        qt.Enqueue("A");
        qt.Enqueue("B");
        qt.Enqueue("C");

        Response.Write("-----Queue     ----------<br>");
        foreach (string t in qt.ToArray())
        {
            Response.Write(t + "<br>");
        }


        Response.Write("-----Dequeue----------<br>" + qt.Dequeue().ToString() + "<br><br>");//             
        foreach (string t in qt.ToArray())
        {
            Response.Write(t + "<br>");
        }

        Response.Write("-------peek--------<br>" + qt.Peek() + "<br><br>");
        foreach (string t in qt.ToArray())
        {
            Response.Write(t + "<br>");
        }

        Response.Write("-------SortedList------------<br>");

        SortedList stl = new SortedList();
        stl.Add("A", "wo");
        stl.Add("B", "ni");
        stl.Add("C", "ta");

        for (int i = 0; i < stl.Count; i++)
        {
            Response.Write("Key:" + stl.GetKey(i) + ",Value:" + stl.GetByIndex(i)+"<br>");
        }

    
    }

}