private void LoadData()
        {
            DataTable db = blNV.GetInfoStaff(SHAREVAR.MaNV).Tables[0];

            lbMaNV.Text     = db.Rows[0][0].ToString();
            lbTenNV.Text    = db.Rows[0][1].ToString();
            lbNgaySinh.Text = Convert.ToDateTime(db.Rows[0][2].ToString()).ToString("dd/MM/yyyy");
            lbGioiTinh.Text = db.Rows[0][3].ToString();
            lbCMND.Text     = db.Rows[0][4].ToString();
            lbSDT.Text      = db.Rows[0][5].ToString();
            lbDiaChi.Text   = db.Rows[0][6].ToString();
            lbChucVu.Text   = SHAREVAR.sharevarVeChucVu;
            // lenNV.Text = db.Rows[0][0].ToString();
        }