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.net 2008 如何獲取網(wǎng)絡(luò)時(shí)間

你是指Internet上的國(guó)際標(biāo)準(zhǔn)時(shí)間嗎。

先加入控件 AxWinsock1 在.Com中Microsoft.Winsock

Public Class Form1

Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Integer)

Dim NoSrv As Boolean

Dim TimeFromNet As String

Dim OldTime As Date

Dim NewTime As Date

Dim MyDate As Date

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

If AxWinsock1.CtlState MSWinsockLib.StateConstants.sckClosed Then AxWinsock1.Close()

AxWinsock1.Protocol = MSWinsockLib.ProtocolConstants.sckTCPProtocol

NetTime("") '首先取中科院國(guó)家授時(shí)中心時(shí)間

If NoSrv Or TimeFromNet = "" Then

NetTime("time.nist.gov") '取美國(guó)標(biāo)準(zhǔn)技時(shí)院時(shí)間

If NoSrv Or TimeFromNet = "" Then

MsgBox("檢測(cè)不到網(wǎng)絡(luò)標(biāo)準(zhǔn)時(shí)間服務(wù)器time.nist.gov！")

Else

NetTime("time.nist.gov")

If TimeFromNet = "" Then

MsgBox("網(wǎng)絡(luò)標(biāo)準(zhǔn)時(shí)間服務(wù)器time.nist.gov超時(shí)！")

Else

MyDate = Mid(TimeFromNet, 8, 8)

OldTime = Mid(TimeFromNet, 17, 8)

NewTime = TimeSerial((Hour(OldTime) + 8) Mod 24, Minute(OldTime), Second(OldTime))

Dim MyTime As DateTime = MyDate Space(1) NewTime

MsgBox(MyTime)

'SetWindowsClock(MyTime)

End If

End If

Else

'使網(wǎng)絡(luò)誤差時(shí)間小，第2次再中科院國(guó)家授時(shí)中心時(shí)間

NetTime("")

If TimeFromNet = "" Then

MsgBox("網(wǎng)絡(luò)標(biāo)準(zhǔn)時(shí)間服務(wù)器超時(shí)！")

Else

MyDate = Mid(TimeFromNet, 8, 8)

NewTime = Mid(TimeFromNet, 17, 8)

Dim MyTime As DateTime = MyDate Space(1) NewTime

MsgBox(MyTime)

'SetWindowsClock(MyTime)

End If

End If

End Sub

Private Sub NetTime(ByVal TimeSrv As String)

NoSrv = False

TimeFromNet = ""

If AxWinsock1.CtlState MSWinsockLib.StateConstants.sckClosed Then AxWinsock1.Close()

AxWinsock1.RemoteHost = TimeSrv ' "" 或 "time.nist.gov"

AxWinsock1.RemotePort = 13

AxWinsock1.LocalPort = 0

AxWinsock1.Connect()

Do While TimeFromNet = ""

If NoSrv Then Exit Do

Sleep(55)

System.Windows.Forms.Application.DoEvents()

Loop

If AxWinsock1.CtlState MSWinsockLib.StateConstants.sckClosed Then AxWinsock1.Close()

End Sub

Private Sub AxAxWinsock1_CloseEvent(ByVal sender As Object, ByVal e As System.EventArgs) Handles AxWinsock1.CloseEvent

AxWinsock1.Close()

End Sub

Private Sub AxAxWinsock1_DataArrival(ByVal sender As Object, ByVal e As AxMSWinsockLib.DMSWinsockControlEvents_DataArrivalEvent) Handles AxWinsock1.DataArrival

AxWinsock1.GetData(TimeFromNet)

End Sub

Private Sub AxAxWinsock1_Error(ByVal sender As Object, ByVal e As AxMSWinsockLib.DMSWinsockControlEvents_ErrorEvent) Handles AxWinsock1.Error

NoSrv = True

End Sub

End Class

怎么在VB.net中實(shí)時(shí)顯示時(shí)間

定時(shí)器中處理

Private?Sub?Form1_Load(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?MyBase.Load

Timer1.Interval?=?10?'10毫秒刷新一次

Timer1.Start()?'開啟定時(shí)器

End?Sub

Private?Sub?Timer1_Tick(ByVal?sender?As?System.Object,?ByVal?e?As?System.EventArgs)?Handles?Timer1.Tick

Label1.Text?=?Now

End?Sub

問(wèn)一個(gè)VB.NET中關(guān)于時(shí)間操作的問(wèn)題。

1、時(shí)間可以直接比較大小，定義兩個(gè)時(shí)間的變量，直接使用或者即可判斷，跟數(shù)據(jù)大小判斷是一樣的

2、時(shí)間差值，可以使用DateDiff函數(shù)進(jìn)行

3、比如取一個(gè)現(xiàn)在的時(shí)間now，使用Year、month、day、hour、min、sec函數(shù)可以取到now的年份、月、日、小時(shí)、分鐘和秒

vb怎么獲取系統(tǒng)當(dāng)前的系統(tǒng)時(shí)間啊

vb中獲取系統(tǒng)當(dāng)前的時(shí)間用函數(shù) now() 就可以。另外還有相關(guān)的時(shí)間 date() time()

now()獲取系統(tǒng)當(dāng)前日期和時(shí)間，如：2015-12-12 22：23：34

time()獲取系統(tǒng)的時(shí)間，如：22：23：34不顯示當(dāng)前日期

date()獲得系統(tǒng)的日期，如：2015-12-12

Private Sub Command1_Click()

MsgBox Now()

MsgBox Time()

MsgBox Date

End Sub

vb.net獲取年，月，日，時(shí)，分，秒

不是 有 函數(shù)嘛？

now() 就是 吧

取得 后 再 分離出你所需的，分別賦值 就行了，當(dāng)然 還是 有 函數(shù)的

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