vb.net取服务器时间的简单介绍
vb获取服务器时间
在窗体中建一个文本框和时间控件,可以在文本框中显示跳动的服务器时间
为矿区等地区用户提供了全套网页设计制作服务,及矿区网站建设行业解决方案。主营业务为网站设计、成都网站设计、矿区网站设计,以传统方式定制建设网站,并提供域名空间备案等一条龙服务,秉承以专业、用心的态度为用户提供真诚的服务。我们深信只要达到每一位用户的要求,就会得到认可,从而选择与我们长期合作。这样,我们也可以走得更远!
Private Sub Form_Load()
Timer1.Interval = 300
End Sub
Private Sub Timer1_Timer()
Dim cnn As New ADODB.Connection
Dim cmd As New ADODB.Command
Dim rst As New ADODB.Recordset
Dim Sqlser_time
cnn.ConnectionString = "driver={SQL Server};" _
"server=server;uid=sa;pwd=;database=master"
cnn.Open
cmd.ActiveConnection = cnn
cmd.CommandText = "SELECT GETDATE() AS sys_Sqlser_time"
Set rst = cmd.Execute
Sqlser_time = rst(0)
Text1.Text = Sqlser_time
rst.Close
cnn.Close
End Sub
Vb.net 2008 如何获取网络时间
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
VB如何“简单”获取网络时间?高手过来支两招。
最简单的办法是用Shell调用NET TIME //servername 命令获得时间,你可以将输出重定向到一个文件,然后在VB读取这个文件以获得时间。 ---------------------------------------或者服务器上有SQL服务的话,可以:Set DbC = New ADODB.Connection
Dim adoDateTime As New ADODB.Recordset '获取 NT-SERVER 时间
With DbC
If .State = adStateOpen Then .Close
.CursorLocation = adUseClient
.ConnectionString = "DRIVER={MySQL ODBC 3.51 Driver};SERVER=" Server ";UID=" uID ";PWD=" uPassword ";DATABASE=" MyDatabase ";OPTION=1 + 2 + 8 + 32 + 2048 + 163841"
.ConnectionTimeout = 90
.Open
adoDateTime.Open "select now() as mysqlTime"
End With ————————————————————————————————————————————使用Windows API的NetRemoteTOD函数获得服务器的时间Option Explicit
Private Declare Function NetRemoteTOD Lib "Netapi32.dll" ( _
tServer As Any, pBuffer As Long) As Long
Private Type SYSTEMTIME
wYear As Integer
wMonth As Integer
wDayOfWeek As Integer
wDay As Integer
wHour As Integer
wMinute As Integer
wSecond As Integer
wMilliseconds As Integer
End Type
Private Type TIME_ZONE_INFORMATION
Bias As Long
StandardName(32) As Integer
StandardDate As SYSTEMTIME
StandardBias As Long
DaylightName(32) As Integer
DaylightDate As SYSTEMTIME
DaylightBias As Long
End Type
Private Declare Function GetTimeZoneInformation Lib "kernel32" (lpTimeZoneInformation As TIME_ZONE_INFORMATION) As Long
Private Declare Function NetApiBufferFree Lib "Netapi32.dll" (ByVal lpBuffer As Long) As Long
'
Private Type TIME_OF_DAY_INFO
tod_elapsedt As Long
tod_msecs As Long
tod_hours As Long
tod_mins As Long
tod_secs As Long
tod_hunds As Long
tod_timezone As Long
tod_tinterval As Long
tod_day As Long
tod_month As Long
tod_year As Long
tod_weekday As Long
End Type
'
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Public Function getRemoteTOD(ByVal strServer As String) As Date
Dim result As Date
Dim lRet As Long
Dim tod As TIME_OF_DAY_INFO
Dim lpbuff As Long
Dim tServer() As Byte
tServer = strServer vbNullChar
lRet = NetRemoteTOD(tServer(0), lpbuff)
If lRet = 0 Then
CopyMemory tod, ByVal lpbuff, Len(tod)
NetApiBufferFree lpbuff
result = DateSerial(tod.tod_year, tod.tod_month, tod.tod_day) + _
TimeSerial(tod.tod_hours, tod.tod_mins - tod.tod_timezone, tod.tod_secs)
getRemoteTOD = result
Else
Err.Raise Number:=vbObjectError + 1001, _
Description:="cannot get remote TOD"
End If
End Function
'要运行该程序,通过如下方式调用。
Private Sub Command1_Click()
Dim d As Date
d = getRemoteTOD("\\trademark")
MsgBox d
End Sub
文章题目:vb.net取服务器时间的简单介绍
文章分享:http://scyanting.com/article/hdjhop.html