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