ASP.NET，C#|如何将方法(和返回值)与控制器一起使用

Question

我正在做一个学校项目，我被卡住了。我试图从用户那里获得一些信息，并用用户输入的信息计算一些事情。

我让我的代码运行，但我的老师告诉我，我需要将计算替换到我的逻辑层(它们在我的控制器中(。我正努力做到这一点，但我被卡住了。

这是我的控制器：

 public class CalculatorController : Controller
    {
        // GET: Calculator
        public ActionResult PackCalculator()
        {
            return View(new CalculatorModel());
        }
        [HttpPost]
        public ActionResult PackCalculator(CalculatorModel calculator)
        {
            CalculatorLogic x = new CalculatorLogic();
            int Y = x.calculator(new CalculatorModel());
            return View(calculator);
        }

这是逻辑层中的类：

namespace ApexLogic
{
   public class CalculatorLogic
    {
        public int calculator(CalculatorModel calculator)
        {
            if (calculator.CurrentLevel < 21)
            {
                calculator.CurrentPack = calculator.CurrentPack + (calculator.CurrentLevel - 1);
                int seizoenPacks = calculator.PlayedSeasons * 5;
                int BattlepassPacks = calculator.Battlepass * 12;
                int CurrentPack = calculator.CurrentPack + seizoenPacks + BattlepassPacks + calculator.BoughtPacks;
                return CurrentPack;
            }
            else if (calculator.CurrentLevel > 21 && calculator.CurrentLevel < 301)
            {
                int CurrentLevelPack = calculator.CurrentLevel - 20;
                int PackCalculator2 = (calculator.CurrentLevel / 2);
                int CurrentLevelPack2 = PackCalculator2 + 19;
                int seizoenPacks = calculator.PlayedSeasons * 5;
                int BattlepassPacks = calculator.Battlepass * 12;
                calculator.CurrentPack = calculator.CurrentPack + seizoenPacks + BattlepassPacks +
                                         calculator.BoughtPacks + CurrentLevelPack2;
                return calculator.CurrentPack;

            }
            else if (calculator.CurrentLevel > 300 && calculator.CurrentLevel <= 500)
            {
                int CurrentLevelPack = calculator.CurrentLevel - 300;
                int PackCalculator2 = (CurrentLevelPack / 5);
                int CurrentLevelPack2 = PackCalculator2 + 159;
                int seizoenPacks = calculator.PlayedSeasons * 5;
                int BattlepassPacks = calculator.Battlepass * 12;
                calculator.CurrentPack = calculator.CurrentPack + seizoenPacks + BattlepassPacks +
                                         calculator.BoughtPacks + CurrentLevelPack2;
                return calculator.CurrentPack;
            }
            else
            {
                return 0;
            }
        }
    }

当我尝试使用断点查看哪里出了问题时，我可以看到用户的输入被正确地定向到了类，但我的计算没有完成，我总是返回0。我现在不知道该怎么办(通常我会用断点修复它，但它们对我没有帮助(

用户输入

正如你所看到的一样，它被正确地处理了

但控制器中的Y始终为零。如果我像在第一个if语句中那样使用返回方式，或者如果我在第二个或第三个if语句中使用返回方式。有人能帮我吗？

Answer 1

您正在将new CalculatorModel传递到对应用程序逻辑类的调用中

int Y = x.calculator(new CalculatorModel()); //This is what is messing you up

更改为：

int Y = x.calculator(calculator); //Use the model parameter which is passed into your Post method

Answer 2

您的模型为空，首先必须填充您的模型。像这样更改代码，

 [HttpPost]
        public ActionResult PackCalculator(CalculatorModel calculator)
        {
            CalculatorLogic x = new CalculatorLogic();
            int Y = x.calculator(new CalculatorModel());
            return View(calculator);
        }
 [HttpPost]
        public ActionResult PackCalculator(CalculatorModel calculator)
        {
            CalculatorLogic x = new CalculatorLogic();
            var model = new CalculatorModel(){
            CurrentLevel = 12,
            CurrentLevelPack = 10 .....
            };
            int Y = x.calculator(model);
            return View(calculator);
        }