private void btnthemtp_Click(object sender, EventArgs e) { using (quanlithucungEntities1 quanli = new quanlithucungEntities1()) { if (rbthuong.Checked == true) { loai = rbthuong.Text; } if (rbphat.Checked == true) { loai = rbphat.Text; } quanli.insertThuongPhat(cbnhanvien.SelectedValue.ToString(), DateTime.Now, loai, int.Parse(txttien.Text), txtlydo.Text); quanli.SaveChanges(); MessageBox.Show("Thêm thành công!"); Formnhanvien_Load(sender, e); } }