ArrayList Example In Asp.Net,ArrayList Example In Asp.Net C#

ArrayList Example In Asp.Net

In this post we will learn how to use ArrayList in asp.net.ArrayList dynamically resizes, as elements are added, it grows in capacity to accommodate them.

Design:

01<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
02 
03<!DOCTYPE html>
04 
05<html xmlns="http://www.w3.org/1999/xhtml">
06<head runat="server">
07<title>ArrayList Example In Asp.Net</title>
08<style type="text/css">
09body
10 {
11 width: 980px;
12 margin: 0px auto;
13 text-align: center;
14 padding-top: 50px;
15 font-size: 20px;
16 }
17</style>
18</head>
19<body>
20<h2>ArrayList Example In Asp.Net</h2>
21<form id="form1" runat="server">
22<div>
23<asp:Button ID="abtn" runat="server" Text="Simple ArrayList" OnClick="abtn_Click" /> 
24&nbsp;&nbsp;&nbsp;&nbsp; 
25<asp:Button ID="adbtn" runat="server" Text="Dynamic ArrayList" OnClick="adbtn_Click" />
26 
27</div>
28</form>
29</body>
30</html>

Code:

01using System;
02using System.Collections.Generic;
03using System.Linq;
04using System.Web;
05using System.Web.UI;
06using System.Web.UI.WebControls;
07using System.Data.SqlClient;
08using System.Data;
09using System.Collections;
10 
11public partial class _Default : System.Web.UI.Page
12{
13    protected void Page_Load(object sender, EventArgs e)
14    {
15 
16    }
17    protected void adbtn_Click(object sender, EventArgs e)
18    {
19        SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=dev;User ID=sa;Password=hightech");
20        con.Open();
21        string str = "select top 2 * from users";
22        SqlCommand cmd = new SqlCommand(str, con);
23        SqlDataReader reader;
24        reader = cmd.ExecuteReader();
25        ArrayList emailArray = new ArrayList();
26         
27        while (reader.Read())
28        {
29            emailArray.Add(reader["uemail"]);    
30        }
31        foreach (string email in emailArray)
32        {
33            Response.Write(email);
34            //lbl.Text = ;
35            //Console.WriteLine(email);
36        }
37        reader.Close();
38        con.Close();
39    }
40    protected void abtn_Click(object sender, EventArgs e)
41    {
42        ArrayList list = new ArrayList();
43        list.Add(1);
44        list.Add(2);
45        list.Add(3);
46        list.Add(4);
47        foreach (int i in list)
48        {
49            Response.Write(i);
50        }
51    }
52 
53     
54}

ArrayList Example In Asp.Net

Design:

Code:

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