C# 代表。铸造由于某种原因不工作

Question

2 当我尝试构建此代码时出现错误。第一个："Argument 2 : cannot convert from double to int." 第二个：“CalculatePay(double, int, Calculate) 的最佳重载方法有一些无效参数。我不明白为什么我在 BankHolidayShift 和 NormalShift 方法中应用的转换不起作用。谢谢

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication8
{

    public delegate int Calculate(double val1, int val2);

    class PayCalculator
    {

        static double HourlyPay = 10;
        static int HoursPerShift = 8;

        static int NormalShift(double HourlyPay, int HoursPerShift)
        {
            return (int) HourlyPay * HoursPerShift;
        }

        static int BankHolidayShift(double HourlyPay, int HoursPerShift)
        {
            return (int)(HourlyPay * HoursPerShift) + 50;
        }

        public static int CalculatePay(double a, int b, Calculate calc)
        {

            int TotalPay = calc(a, b);
            return TotalPay;
        }

        static void Main()
        {
            Calculate calc = new Calculate(BankHolidayShift);

            int TotalPay =  CalculatePay(HourlyPay, HourlyPay, calc);
            Console.WriteLine("Total Pay for this shift is : {0}", TotalPay);
            Console.ReadLine();
        }


    }
}

Answer 1

你有int TotalPay = CalculatePay(HourlyPay, HourlyPay, calc);，显然是拼写，你应该有：

int TotalPay =  CalculatePay(HourlyPay, HoursPerShift, calc);

顺便说一句，局部变量，以及方法参数，应该是 CamelCased。

C# 代表。铸造由于某种原因不工作

C# Delegates. Casting not working for some reason

c#

delegates

casting