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

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

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            for (int i = 1; i < 10; i++)
            {
                ListBox1.Items.Add(Convert.ToString(i));

                if (i == 5)
                {
                    break;
                }
            }
        }
    }
}