高手门帮我看看这个函数怎么错了。取日期的

Question

public static DateTime[] GetWeekRange(DateTime date)
        {
            DateTime time3;
            DateTime time1 = new DateTime(date.Year, 1, 1);
            int num1 = (int) ((((DayOfWeek) (Functions.GetWeekOfYear(date) * 7)) - time1.DayOfWeek) - DayOfWeek.Monday);
            DateTime time2 = time1.AddDays((double) num1);
            if (num1 > 7)
            {
                time3 = time2.AddDays(-6);
            }
            else
            {
                time3 = time1;
            }
            return new DateTime[] { time3, time2 } ;
        }

Answer 1

这个函数为什么会出错。哪个高手帮忙解一下。
        public static DateTime[] GetWeekRange(DateTime date)
        {
            DateTime time3;
            DateTime time1 = new DateTime(date.Year, 1, 1);
            int num1 = (int) ((((DayOfWeek) (Functions.GetWeekOfYear(date) * 7)) - time1.DayOfWeek) - DayOfWeek.Monday);
            DateTime time2 = time1.AddDays((double) num1);//这里错了。应该怎么改
            if (num1 > 7)
            {
                time3 = time2.AddDays(-6);
            }
            else
            {
                time3 = time1;
            }
            return new DateTime[] { time3, time2 } ;
        }

Answer 2

取日期需要这么麻烦吗？
DateTime.Now.Date
我看了到麻木了

Answer 3

int num1 = (int) ((((DayOfWeek) (Functions.GetWeekOfYear(date) * 7)) - time1.DayOfWeek) - DayOfWeek.Monday);
上面这一句的Functions哪里来的？？？

Answer 4

这个函数为什么会出错。哪个高手帮忙解一下。
        public static DateTime[] GetWeekRange(DateTime date)
        {
            DateTime time3;
            DateTime time1 = new DateTime(date.Year, 1, 1);
            int num1 = (int) ((((DayOfWeek) (Functions.GetWeekOfYear(date) * 7)) - time1.DayOfWeek) - DayOfWeek.Monday);//这里错了。应该怎么改
            return new DateTime[] { time3, time2 } ;
        }
运算符"-"无法应用于Int和DayOfWeek类型的操作数

Answer 5

你单步调试看 num1是否得到整型值
错的那句 我放到工程里执行没有错
但在你这里，可能DateTime time1 = new DateTime(date.Year, 1, 1);
中DateTime()中的参数没有设置完 你把它初始完 再试一下

Answer 6

int num1 = (int) ((((DayOfWeek) (Functions.GetWeekOfYear(date) * 7)) - time1.DayOfWeek) - DayOfWeek.Monday);
就这句错了。

Answer 7

public static int GetWeekOfYear(DateTime date)
begin
end

Answer 8

刚才那个搞定了。又来了个
        public static int WeekdaysIn(DayOfWeek weekDay, DateTime startDate, DateTime endDate)
        {
            TimeSpan span1 = (TimeSpan) (endDate - startDate);
            int num1 = span1.Days;
            int num2 = num1 / 7;
            int num3 = ((int) startDate.DayOfWeek) + (num1 % 7);
            if (weekDay < startDate.DayOfWeek)
            {
                weekDay += (DayOfWeek.Saturday | DayOfWeek.Monday);//这里有错，怎么改。
            }
            if (weekDay <= ((DayOfWeek) num3))
            {
                num2++;
            }
            return num2;
        }