Power.vb

Namespace My

    ''' <summary>
    ''' 电源管理计划相关函数
    ''' </summary>
    ''' <remarks></remarks>
    Partial Public NotInheritable Class Power

        ''' <summary>
        ''' 设定关机计划（同步阻塞，注意会覆盖之前设定的关机/重启计划）
        ''' </summary>
        ''' <param name="DelaySecond">延时时间（单位秒，最大值315360000，10年，默认值为0，立即执行）</param>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function ShutDown(Optional ByVal DelaySecond As Integer = 0) As Boolean
            Try
                Dim p As New Process
                p.StartInfo.FileName = "cmd.exe"
                p.StartInfo.UseShellExecute = False
                p.StartInfo.RedirectStandardInput = True
                p.StartInfo.RedirectStandardOutput = True
                p.StartInfo.RedirectStandardError = True
                p.StartInfo.CreateNoWindow = True
                p.Start()
                p.StandardInput.WriteLine("shutdown -a >nul 2>nul")
                p.StandardInput.WriteLine("shutdown -s -t " & DelaySecond & " >nul 2>nul")
                p.StandardInput.WriteLine("exit")
                p.StandardOutput.ReadToEnd()
                p.StandardOutput.Close()
                p.Dispose()
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function
        ''' <summary>
        ''' 设定关机计划（异步执行，注意会覆盖之前设定的关机/重启计划）
        ''' </summary>
        ''' <param name="DelaySecond">延时时间（单位秒，最大值315360000，10年，默认值为0，立即执行）</param>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function ShutDownAsync(Optional ByVal DelaySecond As Integer = 0) As Boolean
            Try
                Shell("shutdown -a", AppWinStyle.Hide, False)
                Shell("shutdown -s -t " & DelaySecond, AppWinStyle.Hide, False)
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function



        ''' <summary>
        ''' 设定重启计划（同步阻塞，注意会覆盖之前设定的关机/重启计划）
        ''' </summary>
        ''' <param name="DelaySecond">延时时间（单位秒，最大值315360000，10年，默认值为0，立即执行）</param>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function Reboot(Optional ByVal DelaySecond As Integer = 0) As Boolean
            Try
                Dim p As New Process
                p.StartInfo.FileName = "cmd.exe"
                p.StartInfo.UseShellExecute = False
                p.StartInfo.RedirectStandardInput = True
                p.StartInfo.RedirectStandardOutput = True
                p.StartInfo.RedirectStandardError = True
                p.StartInfo.CreateNoWindow = True
                p.Start()
                p.StandardInput.WriteLine("shutdown -a >nul 2>nul")
                p.StandardInput.WriteLine("shutdown -r -t " & DelaySecond & " >nul 2>nul")
                p.StandardInput.WriteLine("exit")
                p.StandardOutput.ReadToEnd()
                p.StandardOutput.Close()
                p.Dispose()
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function
        ''' <summary>
        ''' 设定重启计划（异步执行，注意会覆盖之前设定的关机/重启计划）
        ''' </summary>
        ''' <param name="DelaySecond">延时时间（单位秒，最大值315360000，10年，默认值为0，立即执行）</param>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function RebootAsync(Optional ByVal DelaySecond As Integer = 0) As Boolean
            Try
                Shell("shutdown -a", AppWinStyle.Hide, False)
                Shell("shutdown -r -t " & DelaySecond, AppWinStyle.Hide, False)
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function



        ''' <summary>
        ''' 取消所有计划（同步阻塞，之前没有关机/重启计划时则无效果）
        ''' </summary>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function AbortPlan() As Boolean
            Try
                Dim p As New Process
                p.StartInfo.FileName = "cmd.exe"
                p.StartInfo.UseShellExecute = False
                p.StartInfo.RedirectStandardInput = True
                p.StartInfo.RedirectStandardOutput = True
                p.StartInfo.RedirectStandardError = True
                p.StartInfo.CreateNoWindow = True
                p.Start()
                p.StandardInput.WriteLine("shutdown -a >nul 2>nul")
                p.StandardInput.WriteLine("exit")
                p.StandardOutput.ReadToEnd()
                p.StandardOutput.Close()
                p.Dispose()
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function
        ''' <summary>
        ''' 取消所有计划（异步执行，之前没有关机/重启计划时则无效果）
        ''' </summary>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function AbortPlanAsync() As Boolean
            Try
                Shell("shutdown -a", AppWinStyle.Hide, False)
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function



        ''' <summary>
        ''' 锁定电脑（同步阻塞，立即执行）
        ''' </summary>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function Lock() As Boolean
            Try
                Shell("rundll32.exe user32.dll LockWorkStation", AppWinStyle.Hide, True)
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function
        ''' <summary>
        ''' 注销用户（同步阻塞，立即执行）
        ''' </summary>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function Logout() As Boolean
            Try
                Shell("shutdown -l", AppWinStyle.Hide, True)
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function
        ''' <summary>
        ''' 休眠电脑（同步阻塞，立即执行，注意系统必须启用了休眠功能才会有效果）
        ''' </summary>
        ''' <returns>是否执行成功</returns>
        ''' <remarks></remarks>
        Public Shared Function Hibernate() As Boolean
            Try
                Shell("shutdown -h", AppWinStyle.Hide, True)
                Return True
            Catch ex As Exception
                Return False
            End Try
        End Function

    End Class

End Namespace