ASP.NET, C# |如何在控制器中使用方法（和返回值）？

Question

我正在做一个学校项目，但遇到了困难。我正在尝试从用户那里获取一些信息，并根据用户输入的信息计算一些东西。

我有我的代码运行，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）。我正在尝试这样做，但我卡住了。

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class：

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错时，我可以看到用户的输入被正确定向到 class，但我的计算没有完成，我总是得到0 return 回来了。我不知道现在该怎么办（通常我用断点修复它，但它们对我没有帮助）

The user input

It is handled correctly as you can see

但我在控制器中的 Y 始终保持为零。如果我在第一个 If 语句中使用 return 的方式，或者我在第二个或第三个 if 语句中使用 return 的方式，都没有区别。有人可以帮助我吗？

Answer 1

您正在将 new CalculatorModel 传递到您对应用程序逻辑的调用中 class:

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

改成这样：

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

Answer 2

您的模型为空，首先您必须填写您的模型。像这样更改您的代码，

 [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);

        }

ASP.NET, C# |如何在控制器中使用方法（和返回值）？

ASP.NET, C# | How to use a method (and the returned value) with a controller?

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