private void LoadTTHD(string MaHD, string MaSach)
{
DataTable dt = DauSachBUS.LoadTTHD("select_tthd", MaSach, MaHD);
cboMaTT.DataSource = dt;
cboMaTT.ValueMember = "matt";
cboMaTT.DisplayMember = "matt";
dtpNgayNhap.Value = DateTime.Parse(dt.Rows[0]["ngaynhap"].ToString());
//dgvDauSach.DataSource = dt;
txtSoLuong.Text = dt.Rows[0]["soluong"].ToString();
}
