public class MyComputer
{
[DllImport("user32")]
public static extern bool ExitWindowsEx(uint uFlags,uint dwReason);
[DllImport("user32")]
public static extern void LockWorkStation();
[DllImport("user32")]
public static extern int SendMessage(int hWnd,int hMsg,int wParam,int lParam);
public enum MonitorState
{
MonitorStateOn=-1,
MonitorStateOff=2,
MonitorStateStandBy=1
}
public static void ShutDown()
{
try
{
System.Diagnostics.ProcessStartInfo startinfo = new System.Diagnostics.ProcessStartInfo("shutdown.exe", "-s -t 00");
System.Diagnostics.Process.Start(startinfo);
}
catch { }
}
public static void Restart()
{
try
{
System.Diagnostics.ProcessStartInfo startinfo = new System.Diagnostics.ProcessStartInfo("shutdown.exe", "-r -t 00");
System.Diagnostics.Process.Start(startinfo);
}
catch { }
}
public static void LogOff()
{
try
{
ExitWindowsEx(0, 0);
}
catch { }
}
public static void LockPC()
{
try
{
LockWorkStation();
}
catch { }
}
public static void Turnoffmonitor()
{
SetMonitorInState(MonitorState.MonitorStateOff);
}
private static void SetMonitorInState(MonitorState state)
{
SendMessage(0xFFFF, 0x112, 0xF170, (int)state);
}
}