c# - 检查 dateTime 是周末还是工作日

Question

<script Language="c#" runat="server">
  void Page_Load()
  {
   DateTime date = DateTime.Now;
   dateToday.Text = " " + date.ToString("d");
   DayOfWeek day = DateTime.Now.DayOfWeek;
   dayToday.Text = " " + day.ToString();

   if ((dayToday == DayOfWeek.Saturday) && (dayToday == DayOfWeek.Sunday))
    {
    Console.WriteLine("This is a weekend");
    }

 }
</script>

使用 dateTime，我试图测试当前日期是工作日还是周末，然后我想将响应打印给用户。目前我收到运行时错误。如果我删除我的 if 语句，第一个项目(当前日期和星期几)会正确打印。

Answer 1

您在以下 if 语句中写错了变量:

if ((dayToday == DayOfWeek.Saturday) || (dayToday == DayOfWeek.Sunday))
{
    Console.WriteLine("This is a weekend");
}

您必须在条件中使用 day 变量而不是 dayToday。

更新: 你也犯了错误的条件。必须有or而不是and。

正确的代码是

if ((day == DayOfWeek.Saturday) || (day == DayOfWeek.Sunday))
{
    Console.WriteLine("This is a weekend");
}