public void SetLemondadeRecipe(string itemToAddToRecipe) { if (itemToAddToRecipe == "1" || itemToAddToRecipe == "lemons") { recipe.amountOfLemons = UserInterface.PromptForNumberOfItemsInRecipe("lemons"); } else if (itemToAddToRecipe == "2" || itemToAddToRecipe == "sugar cubes") { recipe.amountOfSugarCubes = UserInterface.PromptForNumberOfItemsInRecipe("sugar cubes"); } else if (itemToAddToRecipe == "3" || itemToAddToRecipe == "ice cubes") { recipe.amountOfIceCubes = UserInterface.PromptForNumberOfItemsInRecipe("ice cubes"); } else if (itemToAddToRecipe == "4" || itemToAddToRecipe == "price per cup") { bool UserInputIsADouble = false; while (UserInputIsADouble == false || recipe.pricePerCup < 0) { UserInterface.AskForPricePerCup(); UserInputIsADouble = double.TryParse(UserInterface.TakePlayerInput(), out recipe.pricePerCup); } } else { UserInterface.DisplayInvalidSelectionMessage(); } }