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

            string kodeTerbaru;
            string hasilGenerate = Customer.GenerateCode(out kodeTerbaru);

            if (hasilGenerate == "1")
            {
                textBoxIdCustomer.Text = kodeTerbaru;

                // buat agar textBoxKodePegawai tidak bisa diakses
                textBoxIdCustomer.Enabled = false;

                // arahkan cursor ke textBoxNamaPegawai
                textBoxNama.Focus();
            }
            else
            {
                MessageBox.Show("Gagal melakukan generate code. Pesan kesalahan: " + hasilGenerate);
            }

            textBoxNama.Text    = "";
            textBoxAlamat.Text  = "";
            textBoxNomerHp.Text = "";
        }
        private void FormHapusCustomer_Load(object sender, EventArgs e)
        {
            frmDaftar = (FormDaftarCustomer)this.Owner;

            textBoxIdCustomer.Enabled = true;
            textBoxNama.Enabled       = false;
            textBoxAlamat.Enabled     = false;
            textBoxNomerHp.Enabled    = false;
        }
        private void customerToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form form = Application.OpenForms["FormDaftarCustomer"];

            if (form == null)
            {
                FormDaftarCustomer frm = new FormDaftarCustomer();
                frm.Owner = this;
                frm.Show();
            }
            else
            {
                form.Show();
                form.BringToFront();
            }
        }
 private void FormUbahCustomer_Load(object sender, EventArgs e)
 {
     frmDaftar = (FormDaftarCustomer)this.Owner;
 }