private void placeNewOrderToolStripMenuItem_Click(object sender, EventArgs e)
        {
            _storeName = null;

            try
            {
                if (StoresDropDown.Text == "")
                {
                    MessageBox.Show("Choose a Book Store from the drop down.", "Error", MessageBoxButtons.OK);
                    return;
                }
                else
                {
                    _storeName = new store();

                    if (StoresDropDown.SelectedItem is storeViewModel st)
                    {
                        _storeName.stor_id   = st.StoreID;
                        _storeName.stor_name = st.StoreName;
                    }
                    _sales = new sales();

                    _placeOrder         = new PlaceOrderForm(this, _sales, _storeName);
                    _placeOrder.Enabled = true;
                    _placeOrder.ShowDialog();
                }
            }
            catch
            {
                return;
            }
        }