将日期转换为星期几

4 回答

• 1

  Dim d = DateTime.Parse("21/03/2010").DayOfWeek()
  

  回复于 2024-05-08T11:09:33+08:00
• 0

  此代码将在控制台窗口打印星期日

  Dim dateToShow as DateTime =  new DateTime(2010, 03,21)
  
      Console.WriteLine(dateToShow.DayOfWeek.ToString)
  

  回复于 2024-05-08T11:09:33+08:00
• 2

  这应该打印“星期日” .

  string myDateTimeString = "21/03/2010";
  
     DateTime dt = DateTime.ParseExact(
          myDateTimeString, "dd/MM/yyyy", 
          new CultureInfo("en-Us", true)
          , DateTimeStyles.NoCurrentDateDefault);
  
     Console.WriteLine(dt.DayOfWeek);
  

  回复于 2024-05-08T11:09:33+08:00
• 1

  我会使用DateTime.TryParse（）来验证用户输入 .

  Dim input As String = "2010/12/23"
  Dim dateTime As DateTime
  If DateTime.TryParse(input, dateTime) Then
      Console.WriteLine(dateTime.DayOfWeek)
  Else
      Console.WriteLine("Invalid")
  End If
  

  回复于 2024-05-08T11:09:33+08:00