public static int?GetNthParentPid(int pid, int order)
{
int?nullable;
for (nullable = new int?(pid); order > 0 && nullable.HasValue; --order)
{
nullable = ProcessDetails.GetParentProcessId(nullable.Value);
}
return(nullable);
}
public static Process GetParentProcess(int pid)
{
Process process = (Process)null;
int id = Process.GetCurrentProcess().Id;
IntPtr num = IntPtr.Zero;
try
{
ProcessDetails.PROCESSENTRY32 lppe = new ProcessDetails.PROCESSENTRY32()
{
dwSize = (uint)Marshal.SizeOf(typeof(ProcessDetails.PROCESSENTRY32))
};
num = ProcessDetails.CreateToolhelp32Snapshot(2U, 0U);
if (ProcessDetails.Process32First(num, ref lppe))
{
while ((long)pid != (long)lppe.th32ProcessID)
{
if (!ProcessDetails.Process32Next(num, ref lppe))
{
goto label_8;
}
}
process = Process.GetProcessById((int)lppe.th32ParentProcessID);
}
else
{
throw new ApplicationException(string.Format((IFormatProvider)CultureInfo.InvariantCulture, "Failed with win32 error code {0}", (object)Marshal.GetLastWin32Error()));
}
}
catch (Exception ex)
{
Logger.Error("Can't get the process. Ex: {0}", (object)ex.ToString());
}
finally
{
ProcessDetails.CloseHandle(num);
}
label_8:
return(process);
}
public static int?GetParentProcessId(int pid)
{
return(ProcessDetails.GetParentProcess(pid)?.Id);
}