private void lstLayer_SelectedIndexChanged(object sender, EventArgs e)
{
updateLayer();
lstMini.DataSource = Map.myLayer[lstLayer.SelectedIndex].MiniLayer;
lstMini.DisplayMember = "Name";
cmm = (CurrencyManager)BindingContext[Map.myLayer[lstLayer.SelectedIndex].MiniLayer];
cmm.Refresh();
chkBackground.Checked = true;
}
