public static int GetParentProcessId()
{
ProcessBasicInformation ProccessInfo = new ProcessBasicInformation();
IntPtr ProcHandle = Process.GetCurrentProcess().Handle;
uint RetLength = 0;
NtQueryInformationProcess(ProcHandle, PROCESSBASICINFORMATION, ref ProccessInfo, Marshal.SizeOf(ProccessInfo), ref RetLength);
return ProccessInfo.InheritedFromUniqueProcessId.ToInt32();
}
private static extern int NtQueryInformationProcess(IntPtr handle, uint processinformationclass, ref ProcessBasicInformation processInformation, int processInformationLength, ref uint returnLength);