private void AddNewInventoryItem()
        {
            var data = c.GetItemsNotInStock(currentStoreID);

            if (data.Count != 0)
            {
                Console.WriteLine(@"
           Items Not Currently Stocked in this Store
ID    Product                   Current Stock");
                foreach (var x in data)
                {
                    Console.WriteLine(String.Format("{0,-7} | {1,-26} | {2,-13}", x[0], x[1], x[2]));
                }
                while (true)
                {
                    Console.Write("Select a product ID to add to your inventory: ");
                    var s = Console.ReadLine();
                    if (Int32.TryParse(s, out int productID))
                    {
                        try
                        {
                            c.AddNewInventoryItem(currentStoreID, productID);
                            Console.WriteLine($"A request has been made for {c.GetProductNameByID(productID) }.");
                            break;
                        }
                        catch (Exception e)
                        {
                            Console.WriteLine(e.Message);
                        }
                    }
                    else
                    {
                        if (!(s == "" || s == "\n"))
                        {
                            Console.WriteLine("You inserted an invalid ID.");
                        }
                        else
                        {
                            break;
                        }
                    }
                }
            }
            else
            {
                Console.WriteLine(@"This store already has all available items in stock.");
            }
        }