protected void Page_Load(object sender, EventArgs e)
 {
     SQL sql = new SQL();
     DataTable DT = sql.getUserNames();
     if (DT.Rows.Count > 0)
     {
         foreach (DataRow r in DT.Rows)
         {
             ListItem item = new ListItem(r["username"].ToString(), r["identity"].ToString());
             if (!userDrop.Items.Contains(item))
             {
                 userDrop.Items.Add(item);
             }
         }
     }
 }
 protected void Reload()
 {
     userDrop.Items.Clear();
     SQL sql = new SQL();
     DataTable DT = sql.getUserNames();
     if (DT.Rows.Count > 0)
     {
         foreach (DataRow r in DT.Rows)
         {
             ListItem item = new ListItem(r["username"].ToString(), r["identity"].ToString());
             if (!userDrop.Items.Contains(item))
             {
                 userDrop.Items.Add(item);
             }
         }
     }
 }