以下类能够让计算机定时关机，重启和注销,我是用在用教师机控制学生机这个地方
/// <summary>
/// 操作系统开关机
/// </summary>
public class ControlPC
{
#region 调用函数
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct TokPriv1Luid
{
public int Count;
public long Luid;
public int Attr;
}
[DllImport("kernel32.dll", ExactSpelling = true)]
static extern IntPtr GetCurrentProcess();
[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);
[DllImport("advapi32.dll", SetLastError = true)]
static extern bool LookupPrivilegeValue(string host, string name, ref long pluid);
[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall,
ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);
[DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
static extern bool ExitWindowsEx(int DoFlag, int rea);
const int SE_PRIVILEGE_ENABLED = 0x00000002;
const int TOKEN_QUERY = 0x00000008;
const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
const int EWX_LOGOFF = 0x00000000;
const int EWX_SHUTDOWN = 0x00000001;
const int EWX_REBOOT = 0x00000002;
const int EWX_FORCE = 0x00000004;
const int EWX_POWEROFF = 0x00000008;
const int EWX_FORCEIFHUNG = 0x00000010;
private static void DoExitWin(int DoFlag)
{
bool ok;
TokPriv1Luid tp;
IntPtr hproc = GetCurrentProcess();
IntPtr htok = IntPtr.Zero;
ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
tp.Count = 1;
tp.Luid = 0;
tp.Attr = SE_PRIVILEGE_ENABLED;
ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);
ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
ok = ExitWindowsEx(DoFlag, 0);
}
static void Reboot()
{
DoExitWin(EWX_FORCE | EWX_REBOOT);
}
static void PowerOff()
{
DoExitWin(EWX_FORCE | EWX_POWEROFF);
}
static void LogOff()
{
DoExitWin(EWX_FORCE | EWX_LOGOFF);
}
#endregion
/// <summary>
/// 在 seconds 秒内关机
/// </summary>
/// <param name="Seconds"></param>
public void PowerOff(int Seconds)//关机
{
if (Seconds != 0)
Thread.Sleep(Seconds * 1000);
PowerOff();
}
/// <summary>
/// 在 seconds 秒内重启
/// </summary>
/// <param name="Seconds"></param>
public void Reboot(int Seconds)//重启
{
if (Seconds != 0)
Thread.Sleep(Seconds * 1000);
Reboot();
}
/// <summary>
/// 在 seconds 秒内注销
/// </summary>
/// <param name="Seconds"></param>
public void LogOff(int Seconds)//注销
{
if (Seconds != 0)
Thread.Sleep(Seconds * 1000);
LogOff();
}
}