获取每天的周五和周六晚上

Question

问题是我需要在每周六和周五晚上找到并在周五或周六向他们收取 140 美元。我应该使用while循环吗？

  DateTime ArrivalDate = DateTime.Parse(txtArrivalDate.Text);

        DateTime DepartureDate = DateTime.Parse(txtDepartureDate.Text);

        TimeSpan numberOfNights = DepartureDate.Subtract(ArrivalDate);

        decimal nights = numberOfNights.Days;

        txtNights.Text = nights.ToString();
        //txtTotalPrice
        decimal pricePerNight = 120.00m;
        decimal totalNight = nights * pricePerNight;

        txtTotalPrice.Text = "$" + totalNight.ToString();
        txtAvgPrice.Text = "$" + pricePerNight.ToString();


              // finds the fridays
        decimal morePricePerNight = 140.00m;

        int i = 0;
        // while loop
             while (ArrivalDate.DayOfWeek != DayOfWeek.Friday)
        {
            ArrivalDate = ArrivalDate.AddDays(1);
        }

        while (DepartureDate.DayOfWeek != DayOfWeek.Friday)
        {
            DepartureDate = DepartureDate.AddDays(1);
        }

Answer 1

为什么不只使用一个while循环呢？

我猜你可以写如下代码：

var date = DepartureDate;
while (date < ArrivalDate)
{   
    if (date.DayOfWeek == DayOfWeek.Friday || date.DayOfWeek == DayOfWeek.Saturday)
    {
        totalNight += 140.00m;          
    }

    date = date.AddDays(1);
}