vb.net中datetimepicker控件的时间格式问题

还要设置Format 为 ： Custom

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用的时候用DateTimePicker1.Text 不要用value

下面是我随便用了两个DateTimePicker和一个button一个textbox演示了一下的代码,你根据自己的需要调试DateTimePicker风格

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Public Class Form1

Inherits System.Windows.Forms.Form

#Region

Public Sub New()

MyBase.New()

InitializeComponent()

End Sub

Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)

If disposing Then

If Not (components Is Nothing) Then

components.Dispose()

End If

End If

MyBase.Dispose(disposing)

End Sub

Private components As System.ComponentModel.IContainer

Friend WithEvents DateTimePicker1 As System.Windows.Forms.DateTimePicker

Friend WithEvents Button1 As System.Windows.Forms.Button

Friend WithEvents TextBox1 As System.Windows.Forms.TextBox

Friend WithEvents DateTimePicker2 As System.Windows.Forms.DateTimePicker

System.Diagnostics.DebuggerStepThrough() Private Sub InitializeComponent()

Me.DateTimePicker1 = New System.Windows.Forms.DateTimePicker

Me.Button1 = New System.Windows.Forms.Button

Me.TextBox1 = New System.Windows.Forms.TextBox

Me.DateTimePicker2 = New System.Windows.Forms.DateTimePicker

Me.SuspendLayout()

'

'DateTimePicker1

'

Me.DateTimePicker1.AllowDrop = True

Me.DateTimePicker1.CustomFormat = "yyyy-MM-dd"

Me.DateTimePicker1.Format = System.Windows.Forms.DateTimePickerFormat.Custom

Me.DateTimePicker1.Location = New System.Drawing.Point(56, 24)

Me.DateTimePicker1.Name = "DateTimePicker1"

Me.DateTimePicker1.ShowUpDown = True

Me.DateTimePicker1.Size = New System.Drawing.Size(160, 19)

Me.DateTimePicker1.TabIndex = 0

'

'Button1

'

Me.Button1.Location = New System.Drawing.Point(144, 128)

Me.Button1.Name = "Button1"

Me.Button1.TabIndex = 1

Me.Button1.Text = "Button1"

'

'TextBox1

'

Me.TextBox1.Location = New System.Drawing.Point(136, 72)

Me.TextBox1.Name = "TextBox1"

Me.TextBox1.TabIndex = 2

Me.TextBox1.Text = "TextBox1"

'

'DateTimePicker2

'

Me.DateTimePicker2.CustomFormat = "yyyy-MM-dd"

Me.DateTimePicker2.Format = System.Windows.Forms.DateTimePickerFormat.Custom

Me.DateTimePicker2.Location = New System.Drawing.Point(40, 160)

Me.DateTimePicker2.Name = "DateTimePicker2"

Me.DateTimePicker2.Size = New System.Drawing.Size(120, 19)

Me.DateTimePicker2.TabIndex = 3

'

'Form1

'

Me.AutoScaleBaseSize = New System.Drawing.Size(5, 12)

Me.ClientSize = New System.Drawing.Size(292, 273)

Me.Controls.Add(Me.DateTimePicker2)

Me.Controls.Add(Me.TextBox1)

Me.Controls.Add(Me.Button1)

Me.Controls.Add(Me.DateTimePicker1)

Me.Name = "Form1"

Me.Text = "Form1"

Me.ResumeLayout(False)

End Sub

#End Region

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

TextBox1.Text = DateTimePicker1.Text

End Sub

End Class

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我的操作系统和.net都是日文的,注释的东西我删除了,主要看代码就好了

这段代码你可以建一个空的解决方案，完全复制到里面去

（高分悬赏）用vb.net 做个类似DateTimePicker控件的东西，有调整日期的下拉菜单，但是时间要会动的

继承一下DateTimePicker,内置个timer 不断刷新显示

得到焦点停止timer,失去焦点继续timer

把代码贴到项目就会多出一个控件了

拖出来就能使用

显示格式可以自己设置

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''' summary

''' 自动更新的 DateTimePacker

''' /summary

Public Class MyDateTimePacker

Inherits DateTimePicker

Public Sub New()

Me.components = New Container

Me.m_tmrUpdate = New Timer(Me.components)

Me.m_tmrUpdate.Interval = 1000

AddHandler Me.m_tmrUpdate.Tick, New EventHandler(AddressOf Me.m_tmrUpdate_Tick)

MyBase.Format = DateTimePickerFormat.Custom

MyBase.CustomFormat = "yyyy 年 MM 月 dd 日 hh:mm:ss"

End Sub

''' summary

''' 释放资源

''' /summary

Protected Overrides Sub Dispose(ByVal disposing As Boolean)

If (disposing AndAlso (Not Me.components Is Nothing)) Then

Me.components.Dispose

End If

MyBase.Dispose(disposing)

End Sub

Private Sub m_tmrUpdate_Tick(ByVal sender As Object, ByVal e As EventArgs)

MyBase.Value = DateTime.Now

End Sub

Protected Overrides Sub OnEnter(ByVal e As EventArgs)

If Me.AutoUpdateByFocu Then

Me.m_tmrUpdate.Stop

End If

MyBase.OnEnter(e)

End Sub

Protected Overrides Sub OnLeave(ByVal e As EventArgs)

If Me.AutoUpdateByFocu Then

Me.m_tmrUpdate.Start

End If

MyBase.OnLeave(e)

End Sub

' Properties

''' summary

''' 更新定时器状态

''' /summary

Public Property AutoUpdate As Boolean

Get

Return Me.m_tmrUpdate.Enabled

End Get

Set(ByVal value As Boolean)

Me.m_tmrUpdate.Enabled = value

End Set

End Property

''' summary

''' 根据焦点状态开始、停止更新定时器

''' /summary

DefaultValue(False) _

Public Property AutoUpdateByFocu As Boolean

Get

Set(ByVal value As Boolean)

End Property

''' summary

''' 组件容器

''' /summary

Private components As IContainer = Nothing

''' summary

''' 更新定时器

''' /summary

Private m_tmrUpdate As Timer

End Class

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(用C#写的,然后反编译成VB.NET,有图有真相-.-真蛋疼,学C#吧...)

VB.NET,如何用TIMER控件计时

这种功能用不到TIMER，TIMER控件用在这种地方也不适合。（假如你所统计的时间很短，在几分中内话，可以使用，假如你统计的时间很长：几小时、几天几夜，建议改用以下方式）：

在你需要开始计时的地方加入一个记录当前时间，在你想结束的地方也得到一个当前时间。然后将两个时间相减。

希望以上思路可以帮到你。