protected void cblGenre_Init(object sender, EventArgs e)
{
   string[] Genre = { "Fantastyka", "Powieci", "Komputery", "Historia", "Religia" };
   string[] Code = {"sf", "nvl", "cmp", "his", "rel" };

   for (int i = 0; i < Genre.Length; i++)
   {
      // Dodajemy zarwno waciwo Text, jak i Value.
      this.cblGenre.Items.Add(new ListItem(Genre[i], Code[i]));
   }
}

protected void cblGenre_SelectedIndexChanged(object sender, EventArgs e)
{
   StringBuilder sb = new StringBuilder();
   foreach (ListItem li in cblGenre.Items)
   {
      if (li.Selected == true)
      {
         sb.Append("<br/>" + li.Value + "  " + li.Text);
      }
   }

   if (sb.Length == 0)
      lblGenre.Text = "Brak zaznaczonej kategorii.";
   else
      lblGenre.Text = sb.ToString();

}
