private void LoadCbo()
        {
            //Tỉnh
            clsTinhQuanHuyen_BUS BUSQH = new clsTinhQuanHuyen_BUS();

            cboTinh.DataSource    = BUSQH.LayDanhSachTinhThanh();
            cboTinh.DisplayMember = "TENTINH";
            cboTinh.ValueMember   = "MATINH";
            cboTinh.SelectedIndex = 0;
            //Quận Huyện
            clsTinhQuanHuyen_BUS BUSTT = new clsTinhQuanHuyen_BUS();

            cboQuanHuyen.DataSource    = BUSTT.LayDanhSachQuanHuyen(cboTinh.SelectedValue.ToString());
            cboQuanHuyen.DisplayMember = "TENQH";
            cboQuanHuyen.ValueMember   = "MAQH";
            //quốc tịch
            clsQuocTich_BUS BUSQT = new clsQuocTich_BUS();

            cboQuocTich.DataSource    = BUSQT.LayDSQuocTich();
            cboQuocTich.DisplayMember = "TENQT";
            cboQuocTich.ValueMember   = "MAQT";
            //tôn giáo
            clsTonGiao_BUS BUSTG = new clsTonGiao_BUS();

            cboTonGiao.DataSource         = BUSTG.LayDanhSachTonGiao();
            cboTonGiao.DisplayMember      = "TENTG";
            cboTonGiao.ValueMember        = "MATG";
            cboTonGiao.AutoCompleteMode   = AutoCompleteMode.SuggestAppend;
            cboTonGiao.AutoCompleteSource = AutoCompleteSource.ListItems;
            //Mối quan hệ
            clsMoiQuanHe_BUS BUSMQH = new clsMoiQuanHe_BUS();
            //Phòng Ban
            clsPhongBan_BUS BUSPB = new clsPhongBan_BUS();

            cboPhongBan.DataSource    = BUSPB.LayDanhSachPhongBan();
            cboPhongBan.DisplayMember = "TENPB";
            cboPhongBan.ValueMember   = "MAPB";
            //tìm kiếm
            List <clsPhongBan_DTO> lsPhongBan_TK = BUSPB.LayDanhSachPhongBan();
            clsPhongBan_DTO        pb            = new clsPhongBan_DTO();

            pb.TENPB = "Tất cả";
            pb.MAPB  = "0";
            lsPhongBan_TK.Insert(0, pb);
            cboPhongBan_TK.DataSource    = lsPhongBan_TK;
            cboPhongBan_TK.DisplayMember = "TENPB";
            cboPhongBan_TK.ValueMember   = "MAPB";
            //chức vụ
            clsChucVu_BUS BUSCV = new clsChucVu_BUS();

            cboChucVu.DataSource    = BUSCV.LayDanhSachChucVu();
            cboChucVu.DisplayMember = "TENCV";
            cboChucVu.ValueMember   = "MACV";
            //Học Vấn
            clsBangCap_BUS BUSBC = new clsBangCap_BUS();

            cboTrinhDo.DataSource    = BUSBC.LayDanhSachBangCap();
            cboTrinhDo.DisplayMember = "TENBC";
            cboTrinhDo.ValueMember   = "MABC";
            //bacluong
            clsBacLuong_BUS BUSBACLUONG = new clsBacLuong_BUS();

            cboBacLuong.DataSource    = BUSBACLUONG.LayDSBacLuong();
            cboBacLuong.ValueMember   = "BAC";
            cboBacLuong.DisplayMember = "TENBAC";
            //dân tộc
            clsDanToc_BUS BUSDT = new clsDanToc_BUS();

            cboDanToc.DataSource         = BUSDT.LayDSDanToc();
            cboDanToc.ValueMember        = "MaDT";
            cboDanToc.DisplayMember      = "TenDT";
            cboDanToc.AutoCompleteMode   = AutoCompleteMode.SuggestAppend;
            cboDanToc.AutoCompleteSource = AutoCompleteSource.ListItems;
        }
        private void LayHeSoLuong(string MaCV, string MaBAC)
        {
            clsBacLuong_BUS bus = new clsBacLuong_BUS();

            txtHeSo.Text = bus.LayHeSoLuong(MaCV, MaBAC).ToString();
        }