private void bt_Them_Click(object sender, EventArgs e)
{
SP.insertData(txt_MaSP.Text, txt_TenSP.Text, cmb_LoaiSP.SelectedValue.ToString(), cmb_MaNCC.SelectedValue.ToString(), Rtxt_ThongTin.Text, txt_GiaBan.Text, txt_BaoHanh.Text);
if (fNK != null)
{
fNK.load();
}
;
if (FSP != null)
{
FSP.load();
}
;
//FSP.load();
this.Close();
}