public void LoadData()
{
dgvLoaiGiamGia.DataSource = km.LayLoaiGiamGia();
btnLuu.Enabled = false;
btnThem.Enabled = true;
btnSua.Enabled = true;
btnXoa.Enabled = true;
LayTenNhanVien();
DayLenToolStrips();
}
public void LoadData()
{
btnLuu.Enabled = false;
btnThem.Enabled = true;
btnSua.Enabled = true;
btnXoa.Enabled = true;
DataTable dt = new DataTable();
cbMaGiam.DataSource = km.LayLoaiGiamGia();
cbMaGiam.DisplayMember = "TenGiamGia";
cbMaGiam.ValueMember = "MaLoaiGiamGia";
dt = new DataTable();
MatHang1 mh = new MatHang1();
cbMaHang.DataSource = mh.LayMatHang();
cbMaHang.DisplayMember = "TenHang";
cbMaHang.ValueMember = "MaHang";
dgvDSGG.DataSource = km.LayDSGG();
LayTenNhanVien();
DayLenToolStrips();
}