public void create_frm_filter()
{
Manager = new FirmMngr();
FiltrContr filter_controler = new FiltrContr(Manager);
frmFilter frm_filter = new frmFilter(filter_controler);
frm_filter.Show();
}
public frmFilter(FiltrContr new_filter_controler)
{
InitializeComponent();
filter_controler = new_filter_controler;
}