13518219792
可以访问注册表HKEY_CURRENT_USER\Control Panel\International下面的一些键值
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如sShortDate键值表示的是短日期sLongDate表示的是长日期
中文下的短日期是 yyyy-M-d
中文下的长日期是 yyyy'年'M'月'd'日'
你是指Internet上的国际标准时间吗。
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("") '首先取中科院国家授时中心时间
If NoSrv Or TimeFromNet = "" Then
NetTime("time.nist.gov") '取美国标准技时院时间
If NoSrv Or TimeFromNet = "" Then
MsgBox("检测不到网络标准时间服务器time.nist.gov！")
Else
NetTime("time.nist.gov")
If TimeFromNet = "" Then
MsgBox("网络标准时间服务器time.nist.gov超时！")
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
'使网络误差时间小，第2次再中科院国家授时中心时间
NetTime("")
If TimeFromNet = "" Then
MsgBox("网络标准时间服务器超时！")
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
Label1.Text = "12时演示:" + Now.ToString("yyyy-MM-dd hh:mm:ss")
Label2.Text = "24时演示:" + Now.ToString("yyyy-MM-dd HH:mm:ss")
Label3.Text = "UTC时演示:" + System.DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss")
Label4.Text = "时间为不补0:" + Now.ToString("yyyy-MM-dd H:m:s")
Label5.Text = "时间戳:" + CLng(System.DateTime.UtcNow.Subtract(New Date(1970, 1, 1, 0, 0, 0)).TotalMilliseconds).ToString
两种方式自己选用
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
