public UC_DoiTra()
{
InitializeComponent();
dtNgayLap.EditValue = DateTime.Now;
groupQuetCheckHD.Visible = false;
groupQuetHangDoi.Visible = false;
btnXoa.Click += BtnXoa_Click;
btnXoaHang.Click += BtnXoaHang_Click;
iDataProducts = _banHangModel.GetDataProduct();
txtNumberDoi.Text = "1";
}
private void loadbanghang()
{
txtBarCodeKhachHang.Enabled = false;
txt_makh.ReadOnly = true;
txtTienTich.ReadOnly = true;
txtTenKH.ReadOnly = true;
txt_SDT.ReadOnly = true;
txtTongTien.ReadOnly = true;
DataTable dt = _banHangModel.GetDataProduct();
iDataProducts = dt.Copy();
txtNumberScan.Text = "1";
txt_mahd.Text = Getincreaseinvoicecode();
}