asp.net mvc -为c#中的每个循环调用带有新参数值的方法

本文关键字：新参数 方法 参数 调用 循环 mvc net asp | 更新日期: 2023-09-27 17:51:21

[HttpPost]
    public ActionResult ShowDetailRate(FormCollection form)
    {
        List<Calculation> finalList = new List<Calculation>();
        Calculation calc3 = new Calculation();
        double InterestRate = 0;
        double guess = 0.01;
        double guess2 = 0.03;
        for (int i = 0; i < 50; i++)
        {
            InterestRate = secantInterestRate(guess, guess2, form);
            if (radio == "inArrears")
            {
                radioCalc = 0;
            }
            else
            {
                radioCalc = InvoiceAmount;
            }
            calc3.PeriodStartDate = PeriodStartDate;
            calc3.PeriodEndDate = PeriodEndDate;
            if (DTC == "365/365")
            {
                calc3.NumberOfDays = Convert.ToInt32((calc3.PeriodEndDate - calc3.PeriodStartDate).Days) + 1;
            }
            else if (DTC == "360/360")
            {
                calc3.NumberOfDays = 30;
            }
            calc3.InvoiceAmount = InvoiceAmount;
            calc3.InterestRate = InterestRate;
            calc3.InterestAmount = (PV - radioCalc) * InterestRate / DTCyear * calc3.NumberOfDays;
            calc3.Amortization = (calc3.InvoiceAmount - calc3.InterestAmount);
            calc3.PresentValue = PV - calc3.Amortization;
            calc3.StartValue = PV;
            finalList.Add(calc3);
            var count = finalList.Count();
            if (finalList[count].PresentValue != FV)
            {
                guess = guess2;
                guess2 = calc3.InterestRate;
                continue;
            }
            else
                break;
        }
        return PartialView("ShowDetail", finalList);
    }

在上面的方法中，我使用变量InterestRate来调用一个名为secantInterestRate的方法，该方法具有3个参数(double, double, FormCollection)。在循环的第一轮中，我希望将前两个参数设置为(0.01,0.03)，但在第二个循环中，我希望设置为guess = guess 2和guess2 = calc3.InterestRate。并且仍然在循环开始时调用方法secantInterestRate，但是使用新值。最后我尝试了一个小if:

var count = finalList.Count() - 3;
            if (finalList[count].PresentValue != FV)
            {
                guess = guess2;
                guess2 = calc3.InterestRate;
                continue;
            }
            else
                break;

但是这不起作用，因为当循环开始时，guess将是0.01,guess2将再次是0.03，而不是我想要的。

是否有可能使guess = guess2和guess2 = calc3.InterestRate为每一轮新的循环?

asp.net mvc -为c#中的每个循环调用带有新参数值的方法

像这样?

if (i==0) { 
  guess = guess2;
  guess2 = calc3.InterestRate;
} else { 
  // you don't want to change the values after the first time through; do nothing
}

PS:我建议您从表单处理代码中提取出计算代码，或者以其他方式使该方法更具可读性。目前很难看到逻辑，因为有这么多行代码，这可能是很难解决像这样的小问题的主要原因。

按以下方式修改代码:

....
for (int i = 0; i < 50; i++)
{
    if (i > 0)
    {
          guess = guess2;
          guess2 = calc3.InterestRate;
    }
    InterestRate = secantInterestRate(guess, guess2, form);
...
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