vb.net 如何獲取時(shí)間？

兩種方式自己選用

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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如何把數(shù)值轉(zhuǎn)化為時(shí)間格式

vb把數(shù)值轉(zhuǎn)化為時(shí)間格式:

VB.net 中 取系統(tǒng)時(shí)間

Dim datestr As String = ""

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

用戶定義的日期/時(shí)間格式（Format 函數(shù)）

轉(zhuǎn)化代碼：

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("分鐘數(shù)：", "輸入", 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中日期類型怎么從字符串轉(zhuǎn)換

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()函數(shù)，這個(gè)函數(shù)是用于把字符型變量轉(zhuǎn)換成日期型變量，

字符型變量（本例中的a）如果不是標(biāo)準(zhǔn)的日期格式，請先用字符串函數(shù)處理成標(biāo)準(zhǔn)日期格式再用CDate函數(shù)進(jìn)行轉(zhuǎn)換，否則會(huì)報(bào)錯(cuò)

vb.net在textbox1中輸入六個(gè)數(shù)字后，自動(dòng)將格式轉(zhuǎn)換為時(shí)間格式，如輸入120314自動(dòng)變成12:03:14，怎么操作

將輸入的字符串用各種方法嘗試轉(zhuǎn)換為日期變量。然后對(duì)再將日期變量輸出回textbox中。

這里要做的就是用try 配合 各種轉(zhuǎn)換為日期變量的函數(shù)來得到一個(gè)日期結(jié)果。如果所有格式都無法轉(zhuǎn)為日期，則可以提示用戶無法轉(zhuǎn)換 或是根本 不操作。

vb.net里有可以直接把字符20140512150712轉(zhuǎn)為時(shí)間格式2014年05月12日15點(diǎn)07分12秒的函數(shù)嗎？

想直接轉(zhuǎn)換是不行的，首先你可以將字符串按照時(shí)間的格式修改為“2014-05-12 15：07：12”

然后就 可以使用datetime.tryparse(s,out d)進(jìn)行轉(zhuǎn)換了

vb net中怎么樣將字符串類型轉(zhuǎn)換成日期型

給你一個(gè)例子，里邊包含了幾種不同格式轉(zhuǎn)換成標(biāo)準(zhǔn)的日期時(shí)間格式；

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")

' 當(dāng)前系統(tǒng)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