private void FormTambahSPK_Load(object sender, EventArgs e)
        {
            frmDaftar = (FormDaftarSPK)this.Owner;

            try
            {
                string codebaru;
                string hasilgen = Spk.GenerateCode(out codebaru);
                if (hasilgen == "1")
                {
                    textBoxNoSPK.Text    = codebaru;
                    textBoxNoSPK.Enabled = false;
                }
                else
                {
                    MessageBox.Show("Gagal melakukan generate code. Pesan kesalahan: " + hasilgen);
                }

                ListDatapeg.Clear();
                listdatabarang.Clear();

                string hasilbaca2 = OrderPenjualan.BacaData("", "", listorderpenjualan);
                if (hasilbaca2 == "1")
                {
                    comboBox1.Items.Clear();
                    for (int i = 0; i < listorderpenjualan.Count; i++)
                    {
                        comboBox1.Items.Add(listorderpenjualan[i].NoOrder);
                    }
                }

                string hasilBaca3 = Pekerja.BacaData("", "", ListDatapeg);


                if (hasilBaca3 == "1")
                {
                    comboBoxPekerja.Items.Clear();
                    for (int i = 0; i < ListDatapeg.Count; i++)
                    {
                        comboBoxPekerja.Items.Add(ListDatapeg[i].IdPekerja + " . " + ListDatapeg[i].Nama);
                    }
                }
                else
                {
                    MessageBox.Show("Data Pekerja gagal ditampilkan. Pesan kesalahan: " + hasilBaca3);
                }
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message);
            }
        }
        private void sPKToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            Form form = Application.OpenForms["FormDaftarSPK"];

            if (form == null)
            {
                FormDaftarSPK frm = new FormDaftarSPK();
                frm.Owner = this;
                frm.Show();
            }
            else
            {
                form.Show();
                form.BringToFront();
            }
        }