vb.net关闭计算机 vbs关闭

VB.NET 2005编写定时关机程序

最近在网上搜索了一些关于实现关机 重启 注销的文章 发现大多介绍的是VB NET 用API实现这些功能 且在XPsp 环境下无法正常的关机与注销 而对于VB NET 的介绍几乎没有 本文章所涉及的知识点有

用实现关机 重启 注销功能 通过使用textbox与timer控件的结合编写定时器功能 为你的程序加上超链接

本篇文章具有一定的基础性和广泛的实用性 相信能够给 初学者带来一定的帮助

本文所使用的编程环境是Microsoft Visual Studio 首先打开 Visual Studio 在文件 (File) 菜单上 单击新建项目 (New Project) 在新建项目 (New Project) 对话框的模板 (Templates) 窗格中 单击 Windows 应用程序 (Windows Application) 单击确定 (OK)

具体步骤如下

首先在Form 窗体上添加一个Label 控件属性text设置为:今天: 然后分别添加 个button控件name分别为button button button 它们的text属性分别为 关闭计算机（启动定时器） 注销 重新启动

图

现在我们就需要为程序加上一个定时器了 这个定时器需要与textbox 控件相关联 输入正确时间格式后就可以启动定时功能了 然后我们需要在窗体上添加一个timer 一个textbox 控件 和一个RadioButton 控件 让它们保留默认值不变 其中 TextBox 控件的text属性设置为 : : RadioButton 控件text设置为 指定时间关机|时间格式 小时: 分钟: 秒如图 所示

图

以上界面工作基本完成现在需要输入代码了

双击窗体进入常规 声明Public Class Form 事件中

CODE

Imports System Runtime InteropServicesImports Microsoft VisualBasicPublic Class Form _ 调用系统参数Friend Shared Function GetCurrentProcess() As IntPtrEnd Function

_Friend Shared Function OpenProcessToken(ByVal h As IntPtr

ByVal acc As Integer ByRef phtok As IntPtr) As BooleanEnd Function

_Friend Shared Function LookupPrivilegeValue(ByVal host As String

ByVal name As String ByRef pluid As Long) As BooleanEnd Function

_Friend Shared Function AdjustTokenPrivileges(ByVal htok As IntPtr

ByVal disall As Boolean ByRef newst As TokPriv Luid

ByVal len As Integer ByVal prev As IntPtr

ByVal relen As IntPtr) As BooleanEnd Function

_Friend Shared Function ExitWindowsEx(ByVal flg As Integer

ByVal rea As Integer) As BooleanEnd Function

Friend Const SE_PRIVILEGE_ENABLED As Integer = H Friend Const TOKEN_QUERY As Integer = H Friend Const TOKEN_ADJUST_PRIVILEGES As Integer = H Friend Const SE_SHUTDOWN_NAME As String = SeShutdownPrivilege Friend Const EWX_LOGOFF As Integer = H 注销计算机Friend Const EWX_SHUTDOWN As Integer = H 关闭计算机Friend Const EWX_REBOOT As Integer = H 重新启动计算机Friend Const EWX_FORCE As Integer = H 关闭所有进程 注销计算机Friend Const EWX_POWEROFF As Integer = H Friend Const EWX_FORCEIFHUNG As Integer = H

_　 引用参数　Friend Structure TokPriv Luid　Public Count As Integer　Public Luid As Long　Public Attr As IntegerEnd Structure

Private Shared Sub DoExitWin(ByVal flg As Integer)　Dim xc As Boolean 判断语句　Dim tp As TokPriv Luid　Dim hproc As IntPtr = GetCurrentProcess()　 调用进程值　Dim htok As IntPtr = IntPtr Zero　xc = OpenProcessToken(hproc TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY htok)　tp Count = 　tp Luid = 　tp Attr = SE_PRIVILEGE_ENABLED　xc = LookupPrivilegeValue(Nothing SE_SHUTDOWN_NAME tp Luid)　xc = AdjustTokenPrivileges(htok False tp IntPtr Zero IntPtr Zero)　xc = ExitWindowsEx(flg )End Sub

Public Shared Sub Reboot()　DoExitWin((EWX_FORCE Or EWX_REBOOT)) 重新启动计算机End Sub

Public Shared Sub PowerOff()　DoExitWin((EWX_FORCE Or EWX_POWEROFF)) 关闭计算机End Sub

Public Shared Sub LogoOff()　DoExitWin((EWX_FORCE Or EWX_LOGOFF)) 注销计算机End Sub

Dim entTime As Object 保存输入时间Dim xianzaiTime As Object 保存实时时间Dim startTime As Object 保存开始定时时间

注销button 按钮输入code

Private Sub Button _Click(ByVal sender As System Object

ByVal e As System EventArgs) Handles Button ClickLogoOff() 注销计算机End Sub

双击重新启动按钮button 输入code

Private Sub Button _Click(ByVal sender As System Object

ByVal e As System EventArgs) Handles Button Click

Reboot()

End Sub

双击关闭计算机按钮button 输入code

Private Sub Button _Click(ByVal sender As System Object

ByVal e As System EventArgs) Handles Button Click　startTime = TimeOfDay　If Not IsDate(TextBox Text) Then 用IsData函数判断输入的时间格式MsgBox( 你所输入的不是时间格式 ! 错误 )　ElseentTime = TimeValue(TextBox Text)　End If　Timer Enabled = True　 启动定时器　Me WindowState = System Windows Forms FormWindowState Minimized　 最小化窗体

End Sub

如图

图

双击timer 控件如图

图

输入代码

Private Sub Timer _Tick(ByVal sender As System Object

ByVal e As System EventArgs) Handles Timer Tick　xianzaiTime = TimeOfDay　If RadioButton Checked Then

If DateDiff(Microsoft VisualBasic DateInterval Second

xianzaiTime entTime) Then 用DateDiff函数判断是否到时间了

End IfEnd If

PowerOff() 关闭计算机End Sub

好了 基本上一个定时关机程序就完成了 接下来加一个超级链接吧！当然对于高手来说可能是废话 但是对于新手来说这也是必备的 这个超级链接当然是我们最喜欢的天极网开发频道了

先创建一个Label控件吧 把它托到窗体上 将text属性设置为天极网开发频道如图

图

接下来需要输入代码了 双击窗体Form

进入Public Class Form 事件

代码

Private Declare Function ShellExecute Lib shell dll

Alias ShellExecuteA (ByVal hwngnd As Integer

ByVal lpOperation As String ByVal lpFile As String

ByVal lpParameters As String ByVal lpDirectory As String

ByVal nShowCmd As Integer) As Integer

如图

图

双击刚才添加的label属性text:（天极网开发频道）中输入以下代码

Private Sub Label _Click(ByVal sender As System Object

ByVal e As System EventArgs) Handles Label ClickShellExecute( open CStr( ) CStr( ) )

End SubEnd Class

OK！全部搞定 按F 键运行如图 所示 选择相应选项后点击（关闭计算机启动定时器按钮）就可以了 现在程序将按照你所设定的时间而启动关闭计算机选项

lishixinzhi/Article/program/net/201311/12366

相关问答

Q1: 小技巧：VB.NET实现关机和重新启动

Private Declare Function ExitWindowsEx Lib user (ByVal uFlags As Integer ByVal dwReserved As Integer) As IntegerConst EWX_FORCE As Short = Const EWX_LOGOFF As Short = Const EWX_REBOOT As Short = Const EWX_SHUTDOWN As Short = Dim retval As Integer 定义Esc按键Const VK_ESCAPE As Short = H BsPrivate Sub Command _Click(ByVal eventSender As System Object ByVal eventArgs As System EventArgs) Handles Command ClickIf Option Checked Then 注销当前用户retval = ExitWindowsEx(EWX_FORCE )ElseIf Option Checked Then 关闭计算机retval = ExitWindowsEx(EWX_SHUTDOWN )ElseIf Option Checked Then 重新启动retval = ExitWindowsEx(EWX_REBOOT )End IfEnd SubPrivate Sub Command _Click(ByVal eventSender As System Object ByVal eventArgs As System EventArgs) Handles Command ClickMe Close()End Sub 按Esc键时 结束应用程序Private Sub Form _KeyPress(ByVal eventSender As System Object ByVal eventArgs As System Windows Forms KeyPressEventArgs) Handles MyBase KeyPressDim KeyAscii As Short = Asc(eventArgs KeyChar)If KeyAscii = VK_ESCAPE ThenMe Close()End IfIf KeyAscii = TheneventArgs Handled = TrueEnd IfEnd Sub本实例通过使用ExitWindowEx()API函数来达到关机和重新启动vb.net关闭计算机的目vb.net关闭计算机的 在ExitWindowEx()函数中 参数uFlags指定要进行何种操作 在表 中列出vb.net关闭计算机了参数uFlagsvb.net关闭计算机的值及其说明 表 　参数uFlagsvb.net关闭计算机的值及说明 lishixinzhi/Article/program/net/201311/13585

Q2: 请问VB.NET的关机语句是？

这是点击Option 你可以

用个msgbox函数 点击YES时候运行关机代码即可

Private Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Integer, ByVal dwReserved As Integer) As Integer　

Const EWX_FORCE As Short = 4

Const EWX_LOGOFF As Short = 0

Const EWX_REBOOT As Short = 2

Const EWX_SHUTDOWN As Short = 1

Dim retval As Integer

' 定义Esc按键

Const VK_ESCAPE As Short = H1Bs

Private Sub Command1_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles Command1.Click

If Option1.Checked Then

' 注销当前用户

retval = ExitWindowsEx(EWX_FORCE, 0) bitsCN.Com

ElseIf Option2.Checked Then

' 关闭计算机

retval = ExitWindowsEx(EWX_SHUTDOWN, 0)

ElseIf Option3.Checked Then

' 重新启动

retval = ExitWindowsEx(EWX_REBOOT, 0)

End If

End Sub

Private Sub Command2_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles Command2.Click

Me.Close()

End Sub

' 按Esc键时，结束应用程序

Private Sub Form1_KeyPress(ByVal eventSender As System.Object, ByVal eventArgs As System.Windows.Forms.KeyPressEventArgs) Handles MyBase.KeyPress

Dim KeyAscii As Short = Asc(eventArgs.KeyChar)

If KeyAscii = VK_ESCAPE Then BBS.bitsCN.com网管论坛

Me.Close()

End If

If KeyAscii = 0 Then

eventArgs.Handled = True

End If

End Sub

Q3: vb.net关闭指定windowsname的页面

使用VB.NET关闭指定WindowsName的页面可以通过使用System.Diagnostics.Process类的Kill方法来完成。

Kill方法接受一个参数vb.net关闭计算机，即要关闭的进程的窗口名称vb.net关闭计算机，该窗口名称可以通过Process.GetProcessesByName函数获得，这样就可以遍历找到任何一个指定的窗口名称并将其关闭。例如：

Dim process As Process = Process.GetProcessesByName(“MyApplication.exe”)

process.Kill()

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