private void gridNhanVien_CellClick(object sender, DataGridViewCellEventArgs e)
 {
     try
     {
         int dong = gridNhanVien.CurrentCell.RowIndex;
         if (dong > -1)
         {
             if (gridNhanVien.CurrentCell.Value.ToString() == "Xem chi tiết")
             {
                 string    maNV = gridNhanVien.Rows[dong].Cells["MaNV"].Value.ToString();
                 ChiTietNV ct   = new ChiTietNV(maNV);
                 ct.Show();
                 //_3Layer.NhanVien nv = bizNV.BIZ_TimNhanVienTheoMa(maNV);
             }
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show("Lỗi chọn danh sách");
     }
 }
        private void gridNhanVien_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                int dong = gridNhanVien.CurrentCell.RowIndex;
                if(dong > -1)
                {
                    if(gridNhanVien.CurrentCell.Value.ToString() == "Xem chi tiết")
                    {
                        string maNV = gridNhanVien.Rows[dong].Cells["MaNV"].Value.ToString();
                        ChiTietNV ct = new ChiTietNV(maNV);
                        ct.Show();
                        //_3Layer.NhanVien nv = bizNV.BIZ_TimNhanVienTheoMa(maNV);
                    }
                }
            }
            catch (Exception ex)
            {

                MessageBox.Show("Lỗi chọn danh sách");
            }
        }