private void btnUpdate_Click(object sender, EventArgs e)
{
if (cbSpeciality.Text.ToString() != string.Empty)
{
frmAddUpdateSpeciality form = new frmAddUpdateSpeciality(this, false, dsKhoa.Where <Khoa>(k => k.MaKhoa == lblMaKhoa.Text.ToString()).FirstOrDefault());
form.Show();
}
}
private void btnAdd_Click(object sender, EventArgs e)
{
frmAddUpdateSpeciality form = new frmAddUpdateSpeciality(this, true);
form.Show();
}