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:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>ArrayList Example In Asp.Net</title>
<style type="text/css">
body
 {
 width: 980px;
 margin: 0px auto;
 text-align: center;
 padding-top: 50px;
 font-size: 20px;
 }
</style>
</head>
<body>
<h2>ArrayList Example In Asp.Net</h2>
<form id="form1" runat="server">
<div>
<asp:Button ID="abtn" runat="server" Text="Simple ArrayList" OnClick="abtn_Click" /> 
&nbsp;&nbsp;&nbsp;&nbsp; 
<asp:Button ID="adbtn" runat="server" Text="Dynamic ArrayList" OnClick="adbtn_Click" />

</div>
</form>
</body>
</html>

Code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Collections;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void adbtn_Click(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=dev;User ID=sa;Password=hightech");
        con.Open();
        string str = "select top 2 * from users";
        SqlCommand cmd = new SqlCommand(str, con);
        SqlDataReader reader;
        reader = cmd.ExecuteReader();
        ArrayList emailArray = new ArrayList();
        
        while (reader.Read())
        {
            emailArray.Add(reader["uemail"]);    
        }
        foreach (string email in emailArray)
        {
            Response.Write(email);
            //lbl.Text = ;
            //Console.WriteLine(email);
        }
        reader.Close();
        con.Close();
    }
    protected void abtn_Click(object sender, EventArgs e)
    {
	    ArrayList list = new ArrayList();
	    list.Add(1);
	    list.Add(2);
        list.Add(3);
        list.Add(4);
        foreach (int i in list)
        {
            Response.Write(i);
        }
    }

    
}

ArrayList Example In Asp.Net

Design:

Code:

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