如何从DateTimePicker更改时间 [英] how to change the time from DateTimePicker

问题描述

你好所有



我正试图从晚上到第二天早上改变时间



当时间调整为12:00:00 AM日期自动增加

当我退后11:30:00：PM自动减少天数

特别是当上午12:30:00增加并返回12:00:00时

数字继续上涨

 公开 类 Form2 
 公开  Sub  新（）
 
 '  Windows窗体设计器需要此调用。 
 InitializeComponent（）
 我 .Size = 新大小（ 408 ，< span class =code-digit > 328 ）
  Dim  DateTimePicker1 作为 新 DateTimePicker（）
 DateTimePicker1.Location = 新点（ 10 ， 30 ）
 DateTimePicker1.Size = 新大小（ 140 ， 32 ）
 
  Dim  DateTimePicker2 < span class =code-keyword> As   New  DateTimePicker（）
 DateTimePicker2.Location = 新点（ 190 ， 30 ）
 DateTimePicker2.Size = 新大小（ 100 ， 32 ）
 DateTimePicker2.Format = DateTim ePickerFormat.Time 
 DateTimePicker2.ShowUpDown =  True  
  AddHandler  DateTimePicker2.ValueChanged，< span class =code-keyword> AddressOf  DateTimePicker2_ValueChanged 
 
  Me  .Controls.Add（DateTimePicker1）
 < span class =code-keyword> Me  .Controls.Add（DateTimePicker2）
 
 ' 在InitializeComponent（）调用后添加任何初始化。 
 
 结束  Sub  
 
 私有  Sub  Form2_Load（ ByVal 发​​件人作为系统。对象， ByVal  e  As  System.Event Args）句柄  MyBase  .Load 
 
 结束  Sub  
 
 私有  Sub  DateTimePicker2_ValueChanged（ ByVal  sender  As  System。 Object ， ByVal  e  As  System.EventArgs）
 ' ？ 
 结束 < span class =code-keyword> Sub  
 结束 类 

http://s28.postimg.org/s7ofw82gd/ change_value_datetimepicker.png [ ^ ]



任何感兴趣的代码

请得到帮助

非常感谢

解决方案

该问题与 DateTimePicker无关这只是用来挑选一些时间。通常，在系统上任意设置日期/时间是个坏主意。您无法提供合理的准确性等。 （我可以用来欺骗复制保护系统，但更新的保护不受这些技巧的影响。:-)）



解决方案可以在这里找到：如何在.net中设置全局日期时间 [ ^ ]。



请注意，您必须使用P / Invoke，这会损害您的代码的平台兼容性。

- SA

hello all

I'm trying to change the time
today from the evening to the next morning
when time is adjusted to 12:00:00 AM dates automatically increase
when I step back 11:30:00: PM is automatically reduced the number of days
particularly when there is increased 12:30:00 AM and return 12:00:00 AM
the numbers continue to rise day

Public Class Form2
    Public Sub New()

        ' This call is required by the Windows Form Designer.
        InitializeComponent()
        Me.Size = New Size(408, 328)
        Dim DateTimePicker1 As New DateTimePicker()
        DateTimePicker1.Location = New Point(10, 30)
        DateTimePicker1.Size = New Size(140, 32)

        Dim DateTimePicker2 As New DateTimePicker()
        DateTimePicker2.Location = New Point(190, 30)
        DateTimePicker2.Size = New Size(100, 32)
        DateTimePicker2.Format = DateTimePickerFormat.Time
        DateTimePicker2.ShowUpDown = True
        AddHandler DateTimePicker2.ValueChanged, AddressOf DateTimePicker2_ValueChanged

        Me.Controls.Add(DateTimePicker1)
        Me.Controls.Add(DateTimePicker2)

        ' Add any initialization after the InitializeComponent() call.

    End Sub
  
    Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

    Private Sub DateTimePicker2_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)
        '?
    End Sub
End Class

http://s28.postimg.org/s7ofw82gd/change_value_datetimepicker.png[^]

any code that is appreciated
please get help
thanks a lot

解决方案

The question has nothing to do with DateTimePicker which is only used to pick some time. Generally, it's a bad idea to arbitrary set date/time on the system. You cannot provide reasonable accuracy, and so on. (I can be used to cheat copy protection systems, but newer protection is immune to such tricks. :-))

The solution can be found here: How to set global DateTime in .net[^].

Note that you have to use P/Invoke which compromises the platform compatibility of your code.

—SA

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