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

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DirectoryInfo di = new DirectoryInfo(Server.MapPath("~"));
        GridView1.DataSource = di.GetFiles();
        GridView1.DataBind();
        if (!IsPostBack)
        {
            DropDownList1.DataSource = di.GetFiles();
            DropDownList1.DataTextField = "Name";
            DropDownList1.DataValueField = "Length";
            DropDownList1.DataBind();
        }
        var nimed = from f in di.GetFiles() select f.Name.Split('.').First();
        DropDownList2.DataSource = nimed;
        DropDownList2.DataBind();
        var nimed2 = from f in di.GetFiles() select new { nimi = f.Name.Split('.').First(), pikkus = f.Name.Split('.')[1] };
        GridView2.DataSource = nimed2;
        GridView2.DataBind();

    }

    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        Label1.Text = DropDownList1.SelectedValue;
    }
}