Fill data from database or generic list in a custom control (DropDownList)

string PATH2 = AppDomain.CurrentDomain.BaseDirectory + "Files";

          List<ListItem> directorystruct = new List<ListItem>();
           int i=1;
       foreach (string d in Directory.GetDirectories(PATH2))
       {
    string items = "Item " + i;
   directorystruct.Add(new ListItem(d, items));
   i++;
   }
ddlselect.Items.Insert(0, "--Select--");
ddlselect.Items.AddRange(directorystruct.ToArray());