/// <summary>
/// Gets the parent process of a specified process.
/// </summary>
/// <param name="handle">The process handle.</param>
/// <returns>An instance of the Process class.</returns>
private static Process GetParentProcess(IntPtr handle)
{
ParentProcess pbi = new ParentProcess();
int status = NtQueryInformationProcess(handle, 0, ref pbi, Marshal.SizeOf(pbi), out _);
if (status != 0)
{
throw new Win32Exception(status);
}
try
{
return(Process.GetProcessById(pbi.InheritedFromUniqueProcessId.ToInt32()));
}
catch (ArgumentException)
{
// not found
return(null);
}
}
private static extern int NtQueryInformationProcess(IntPtr processHandle, int processInformationClass, ref ParentProcess processInformation, int processInformationLength, out int returnLength);