private void themThucPham()
{
string tenthucpham = cbTen.Text;
using (quanlithucungEntities1 qlthucpham = new quanlithucungEntities1())
{
THUCPHAM tp = qlthucpham.THUCPHAMs.FirstOrDefault(p => p.Tenthucpham.ToLower() == tenthucpham.ToLower());
if (tp == null)
{
qlthucpham.insertCTTP(mapn, int.Parse(txtSoLuong.Text), double.Parse(txtGia.Text), tenthucpham, cbLoai.SelectedValue.ToString(), null, txtdonvi.Text);
qlthucpham.SaveChanges();
MessageBox.Show("Thêm thành công!");
}
else
{
tp.SOLUONG += int.Parse(txtSoLuong.Text);
CTNhapThucPham tpm = new CTNhapThucPham();
tpm.MaPN = mapn;
tpm.MaThucPham = tp.Mathucpham;
tpm.TenThucPham = tp.Tenthucpham;
tpm.MaLoai = cbLoai.SelectedValue.ToString();
tpm.Soluong = int.Parse(txtSoLuong.Text);
tpm.GiaNhap = double.Parse(txtGia.Text);
tpm.DonVi = txtdonvi.Text;
qlthucpham.CTNhapThucPhams.Add(tpm);
qlthucpham.SaveChanges();
MessageBox.Show("Thêm thành công!");
}
}
}