private void btnSearch_Click(object sender, EventArgs e)
        {
            var en = new ManageReceptionistEntity();
            var re = new ManageReceptionistRepo();

            en.Id    = txtId.Text;
            en.Name  = txtName.Text;
            en.Phone = txtPhone.Text;

            re.Search(en, mgvReceptionist);
            mgvReceptionist.ClearSelection();
        }
        private void btnRupdate_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("Are you sure?", "Confirmation", MessageBoxButtons.YesNo) == DialogResult.No)
            {
                return;
            }
            else
            {
                var en = new ManageReceptionistEntity();
                var re = new ManageReceptionistRepo();
                en.Id        = txtRid.Text;
                en.Name      = txtRname.Text;
                en.Age       = txtRage.Text;
                en.Sex       = txtRsex.Text;
                en.Reference = txtRreference.Text;
                en.Address   = txtRaddress.Text;
                en.Phone     = txtRphone.Text;

                re.Update(en);
            }
        }