/// <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>
public static Process GetParentProcess(IntPtr handle)
{
ParentProcessUtilities pbi = new ParentProcessUtilities();
int returnLength;
int status = NativeMethods.NtQueryInformationProcess(handle, 0, ref pbi, Marshal.SizeOf(pbi), out returnLength);
if (status != 0) {
// maybe we aren't allowed to do that, so just return null
return null;
}
try {
return Process.GetProcessById(pbi.InheritedFromUniqueProcessId.ToInt32());
} catch (ArgumentException) {
// not found
return null;
}
}
public static extern int NtQueryInformationProcess(IntPtr processHandle, int processInformationClass,
ref ParentProcessUtilities processInformation, int processInformationLength, out int returnLength);