private void btThemTK_Click(object sender, EventArgs e)
{
if (txtTenTK.Text == "" || txtMaukhau.Text == "" && cbNhomquyen.Text == "")
{
MessageBox.Show("Khong co du lieu");
return;
}
TaiKhoan tk = new TaiKhoan(txtTenTK.Text, txtMaukhau.Text, cbNhomquyen.Text);
try
{
cnb.AddTaiKhoan(tk);
}
catch (Exception p)
{
MessageBox.Show(p.ToString());
}
}