public thongketourfrm()
{
InitializeComponent();
cbtour.DataSource = g.loadtour();
cbtour.DisplayMember = "tentour";
cbtour.ValueMember = "id";
drvtk.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
}
public giatourfrm()
{
InitializeComponent();
drvgt.DataSource = g.load();
drvgt.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
cbten.DataSource = g.loadtour();
cbten.DisplayMember = "tentour";
cbten.ValueMember = "id";
btnhuy.Visible = false;
}