vb.net数字转日期,vb转换时间

vb.net 如何获取时间?

两种方式自己选用

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

Dim s As String

s = DateTime.Today.Year()

s = s DateTime.Today.Month()

s = s DateTime.Today.Day()

s = s DateTime.Now.Hour()

s = s DateTime.Now.Minute()

s = s DateTime.Now.Second()

MsgBox(s, vbDefaultButton1, Now())

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

Dim s As String

s = Format(Now(), "yyyymmddhhmmss")

MsgBox(s, vbYes, Now())

End Sub

vb如何把数值转化为时间格式

vb把数值转化为时间格式:

VB.net 中 取系统时间

Dim datestr As String = ""

datestr = Format(Now(), "yyyy/MM/dd H:mm:ss ffff")

用户定义的日期/时间格式(Format 函数)

转化代码:

Dim t As Integer, t1 As Integer, t2 As Integer, s As String

Dim tim As Date

Dim i As Integer, j As Integer

Private Sub Command1_Click()

s = InputBox("分钟数:", "输入", 67)

If s = "" Then Exit Sub

t = Val(s)

If t = 0 Then Exit Sub

t1 = t \ 60

t2 = t Mod 60

s = t1 ":" t2

tim = Format(s, "hh:mm:ss")

Text1.Text = tim

Timer1.Interval = 1000

Timer1.Enabled = True

End Sub

Private Sub Timer1_Timer()

Dim tt1 As Integer, tt2 As Integer, tt3 As Integer, tt As String

tt = Text1.Text

tt1 = Val(Left(tt, Len(tt) - 6))

tt2 = Val(Mid(tt, Len(tt) - 4, 2))

tt3 = Val(Right(tt, 2))

tt3 = tt3 - 1

If tt3 0 Then tt3 = 59: tt2 = tt2 - 1

If tt2 0 Then tt2 = 59: tt1 = tt1 - 1

If tt1 0 Then Timer1.Enabled = False: Exit Sub

tt = tt1 ":" tt2 ":" tt3

tim = Format(tt, "hh:mm:ss")

Text1.Text = tim

End Sub

vb.net中日期类型怎么从字符串转换

Dim a As String

Dim b As Date

a = "2016-11-18"

b = CDate(a)

本例中最主要的就是CDate()函数,这个函数是用于把字符型变量转换成日期型变量,

字符型变量(本例中的a)如果不是标准的日期格式,请先用字符串函数处理成标准日期格式再用CDate函数进行转换,否则会报错

vb.net在textbox1中输入六个数字后,自动将格式转换为时间格式,如输入120314自动变成12:03:14,怎么操作

将输入的字符串用各种方法尝试转换为日期变量。然后对再将日期变量输出回textbox中。

这里要做的就是用try 配合 各种转换为日期变量的函数来得到一个日期结果。如果所有格式都无法转为日期,则可以提示用户无法转换 或是根本 不操作。

vb.net里有可以直接把字符20140512150712转为时间格式2014年05月12日15点07分12秒的函数吗?

想直接转换是不行的,首先你可以将字符串按照时间的格式修改为“2014-05-12 15:07:12”

然后就 可以使用datetime.tryparse(s,out d)进行转换了

vb net中怎么样将字符串类型转换成日期型

给你一个例子,里边包含了几种不同格式转换成标准的日期时间格式;

Public Class Form1

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

Try

' 01/09/2001 00:00:00

Dim MyDateTime1 As DateTime = DateTime.Parse("Sep 2001")

' 05/09/2001 14:15:33

Dim MyDateTime2 As DateTime = DateTime.Parse("Wed 5 September 2001 14:15:33")

' 01/09/2005 00:00:00

Dim MyDateTime3 As DateTime = DateTime.Parse("5,9,01")

' 09/05/2001 14:15:33

Dim MyDateTime4 As DateTime = DateTime.Parse("5/9/2001 14:15:33")

' 当前系统日期 14:15:00

Dim MyDateTime5 As DateTime = DateTime.Parse("2:15 PM")

Dim MyInfo As String = MyDateTime1.ToString()

MyInfo += vbCrLf + MyDateTime2.ToString()

MyInfo += vbCrLf + MyDateTime3.ToString()

MyInfo += vbCrLf + MyDateTime4.ToString()

MyInfo += vbCrLf + MyDateTime5.ToString()

MessageBox.Show(MyInfo, "信息提示", _

MessageBoxButtons.OK, MessageBoxIcon.Information)

Catch ex As Exception

MessageBox.Show(ex.Message, "信息提示", _

MessageBoxButtons.OK, MessageBoxIcon.Information)

End Try

End Sub

End Class


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