/// <summary>
        /// Создать новый заказ
        /// </summary>
        private void CreateNewOrder()
        {
            string ordName = CreateOrderName();
            var    usId    = AppState.CurrentUser.UserId;

            var receiptData = new ReceiptData();

            receiptData.UserName        = AppState.CurrentUser.userName;
            receiptData.TimeOfPurchase  = DateTime.Now.ToString();
            receiptData.PurchasedOrders = new List <Product>();

            for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
            {
                DataGridViewRow row = dataGridView1.Rows[i];
                Int32.TryParse(row.Cells[0].Value.ToString(), out int prId);
                string prod  = row.Cells[1].Value.ToString();
                string price = row.Cells[2].Value.ToString();
                Int32.TryParse(row.Cells[3].Value.ToString(), out int prQuantity);

                receiptData.PurchasedOrders.Add(new Product()
                {
                    productName = prod, productPrice = float.Parse(price)
                });

                // Добавить в таблицу Order заказ
                AddNewOrderRow(ordName, usId, prId, prQuantity);
            }

            receiptData.Summ = TotalCostLabel.Text;
            MessageBox.Show("Заказик принят.");
            CreateReceipt(receiptData);
        }
        public void CreateReceipt(ReceiptData receiptData)
        {
            string receipt = string.Empty;

            receipt += $"Покупатель: {receiptData.UserName} Дата покупки: {receiptData.TimeOfPurchase} {Environment.NewLine}";

            foreach (var product in receiptData.PurchasedOrders)
            {
                receipt += $"Товар: {product.productName} Стоимость: {product.productPrice} грн {Environment.NewLine}";
            }

            receipt += $"{receiptData.Summ}";

            if (!Directory.Exists("Temp"))
            {
                Directory.CreateDirectory("Temp");
            }

            File.WriteAllText(FilePath, receipt);
            Process.Start("notepad.exe", FilePath);
        }
        /// <summary>
        /// Создать чек
        /// </summary>
        private void CreateReceipt(ReceiptData data)
        {
            var receipt = new Receipt();

            receipt.CreateReceipt(data);
        }