private void btnTimChucVu_Click_1(object sender, EventArgs e)
 {
     try
     {
         using (var k = new AppCode.QuanCafe())
         {
             var kq = k.TimCV(txtIDChucVu.Text);
             if (kq == null)
             {
                 MessageBox.Show("Không tìm thấy", "Thông báo ", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
                 return;
             }
             else
             {
                 txtIDCV.Text   = kq.IDChucVu;
                 txtTenCV.Text  = kq.TenChucVu;
                 txtMoTaCV.Text = kq.MoTa;
             }
         }
     }
     catch
     {
         return;
     }
 }
 private void LoadThongTinNhanVien(int vitri)
 {
     try
     {
         using (var k = new AppCode.QuanCafe())
         {
             txtMaNV.Text      = grvDSNV.Rows[vitri].Cells[1].Value.ToString().Trim();
             txt2MaNV.Text     = grvDSNV.Rows[vitri].Cells[1].Value.ToString().Trim();
             txtTenNV.Text     = grvDSNV.Rows[vitri].Cells[2].Value.ToString();
             dtPk.Value        = Convert.ToDateTime(grvDSNV.Rows[vitri].Cells[3].Value.ToString());
             txtNoiTamTru.Text = grvDSNV.Rows[vitri].Cells[5].Value.ToString();
             txtSDT.Text       = grvDSNV.Rows[vitri].Cells[6].Value.ToString().Trim();
             txtTenDNNV.Text   = grvDSNV.Rows[vitri].Cells[7].Value.ToString();
             txtMatKhauNV.Text = grvDSNV.Rows[vitri].Cells[8].Value.ToString();
             cbbChucVu.Text    = k.TimCV((grvDSNV.Rows[vitri].Cells[9].Value.ToString())).TenChucVu;
         }
     }
     catch (Exception e)
     {
         //clear text box
     }
 }