using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text;
using System.ComponentModel;
using System.Data;
using System.Drawing;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DirectoryInfo imgFiles = new DirectoryInfo(Server.MapPath("~/images/"));
        FileInfo[] fileName = imgFiles.GetFiles("*.jpg");

   if (!IsPostBack)
            {
                imgBox.ImageUrl = ("~/images/default/default.jpg");
                foreach (FileInfo i in fileName)
                {
                    listFiles.Items.Add(Path.GetFileNameWithoutExtension(i.Name));
                }
            }
    }









 protected void listFiles_SelectedIndexChanged(object sender, EventArgs e)
    {
        imgBox.ImageUrl = ("~/images/" + listFiles.SelectedItem.Text + ".jpg");
    }
}