使用C#编写的一个定时关机程序

protected static void SuspendSystem(bool hibernate , bool force ){

if (!CheckEntryPoint("powrprof.dll", "SetSuspendState"))

throw new PlatformNotSupportedException("The SetSuspendState method is not supported on this system!");

SetSuspendState((int)(hibernate ? 1 : 0), (int)(force ? 1 : 0), 0);

}

/// <summary>

/// Checks whether a specified method exists on the local computer.

/// </summary>

/// <param name="library">The library that holds the method.</param>

/// <param name="method">The entry point of the requested method.</param>

/// <returns>True if the specified method is present, false otherwise.</returns>

protected static bool CheckEntryPoint(string library , string method ) {

IntPtr libPtr = LoadLibrary(library);

if (!libPtr.Equals(IntPtr.Zero)) {