public void LoadItemsFromTextFiles()
        {
            string[] storeItemArray = File.ReadAllLines(@"..\..\StoreItems.txt");
            foreach (string line in storeItemArray)
            {
                if (line[0] != '-')
                {
                    string[]  splitLine = line.Split('|');
                    StoreItem newItem   = new StoreItem
                    {
                        Name  = splitLine[0],
                        Price = int.Parse(splitLine[1]),
                        Type  = splitLine[2],
                        Image = splitLine[3]
                    };
                    storeItems.Add(newItem);
                }
            }

            string[] discountArray = File.ReadAllLines(@"..\..\Discounts.txt");
            foreach (string line in discountArray)
            {
                if (line[0] != '-')
                {
                    string[] splitLine = line.Split('|');
                    discounts.Add(splitLine[0], int.Parse(splitLine[1]));
                }
            }

            string[] userArray = File.ReadAllLines(@"..\..\Users.txt");
            foreach (string line in userArray)
            {
                if (line[0] != '-')
                {
                    string[] splitLine = line.Split('|');
                    User     newUser   = new User
                    {
                        FirstName = splitLine[0],
                        LastName  = splitLine[1],
                        UserName  = splitLine[2],
                        Password  = splitLine[3]
                    };
                    users.Add(newUser);
                }
            }

            if (File.Exists(@"C:\Windows\Temp\_shopping_cart.txt"))
            {
                string[] cartArray = File.ReadAllLines(@"C:\Windows\Temp\_shopping_cart.txt");
                foreach (string line in cartArray)
                {
                    try
                    {
                        StoreItem newItem = storeItems.First(item => item.Name == line);
                        shoppingCart.Add(newItem);
                    }
                    catch
                    {
                    }
                }
            }
        }