组合 var 和动态语句

本文关键字：语句 动态 var 组合 | 更新日期: 2023-09-27 18:36:07

这是我遇到的一个有趣的问题。

我有一个返回项目变量的函数;

  var Items = new { sumList = SumList, ratesList = List, sum = List.Sum() };
        return Items;

从动态函数：

    public override dynamic GetRates()

我把它返回到我所在的函数，并尝试将其应用于我的代码：

     dynamic res = cl.mainC.GetRates();
     List<double> MashkantaSumList = res.sumList;

现在，当我尝试应用它时，它说该对象不存在。但是，如果我在调试器中查看，这些项目很高兴地作为通用列表存在，或者不是。

我该如何解决此问题？

编辑：

根据要求，我将发布完整的代码：

 //virtual
   public virtual dynamic TotalMashkanta(int i, double sum, double ribit, string[] discount)
    {
        return 0;
    }
//override
public override dynamic TotalMashkanta(int i, double sum, double ribit, string[] discount)
    {
        double SumTemp = sum;
        double monthlyRibit = ribit / 12;
        Double permPayPerMont = Financial.Pmt(monthlyRibit, i, sum, 0, DueDate.EndOfPeriod);
        List<double> MashkantaList = new List<double>();
        List<double> MashkantaSumList = new List<double>();
        for (int j = 1; j <= i; j++)
        {
            MashkantaList.Add(Mashkanta(j, sum, ribit, permPayPerMont) * (1 - CalcDiscount((j / 12) + 1, discount)));
            SumTemp = getSum(j, sum, ribit, permPayPerMont * -1); ;
            MashkantaSumList.Add(SumTemp);
        }
        var K_Mashkanta = new { sumList = MashkantaSumList, ratesList = MashkantaList, sum = MashkantaList.Sum() };
        return K_Mashkanta;
    }

  //Function that calls the results

  public void GetSilukinTable(string Path, string ClientID, DAL.Client client, string partner_checked,  string insurance_Amount, string Premiya_Structure_Mashkanta, string Premiya_Life_Mashkanta, string Discount_Life_Mashkanta, string Loan_Period,string Loan_EndDate, string Bank, string Loan_Interest, string Loan_Amount, string Discount_Loan, string AgentNotes, string ManID)
    {
        BL.CalculateLogic.Companies t = BL.CalculateLogic.Companies.כלל;
        if(ManID == "211") t = BL.CalculateLogic.Companies.הפניקס;
        if(ManID == "207") t = BL.CalculateLogic.Companies.הראל;
        if(ManID == "206") t = BL.CalculateLogic.Companies.מנורה;
        if(ManID == "208") t = BL.CalculateLogic.Companies.הכשרה;
        BL.CalculateLogic cl = new BL.CalculateLogic(client, t);
        DateTime LoanEnd = DateTime.Now;
        int months = 0;
        if (DateTime.TryParse(Loan_EndDate, out LoanEnd))
            months = BL.Calculating_Companies.Company.GetMonthsBetween(DateTime.Now, LoanEnd);
        else
            months = Int32.Parse(Loan_Period) * 12;
        string[] Discount = Discount_Loan.Split('-');
        dynamic res = cl.mainC.TotalMashkanta(months, Double.Parse(Loan_Amount), Double.Parse(Loan_Interest.Trim('%')), Discount);
        var MashkantaSumList = res.sumList;
        List<double> MashkantaList = res.ratesList;
        List<double> MashkantaSumListPartner = new List<double>();
        List<double> MashkantaListPartner = new List<double>();
        List<double> MashkantaListSum = res.ratesList;
    }

组合 var 和动态语句

编译器对此

感到满意，因为dynamic是在运行时编译和检查的。无论问题是什么，类型都不匹配。它在运行时对此进行评估，因此在编译时不会看到问题。（建议：只有在真正必须时才使用dynamic！否则你会一直遇到这种问题！

我用这个尝试了你的代码，它工作正常：

static dynamic GetRates()
{
    List<double> SumList = new List<double>();
    List<double> List = new List<double>();
    var Items = new { sumList = SumList, ratesList = List, sum = List.Sum() };
    return Items;
}
static void Main(string[] args)
{
    dynamic res = GetRates();
    List<double> MashkantaSumList = res.sumList;
}
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