Question

I am working on a MS Windows C# Winform project and I cannot get the PPID (Parent Process ID).
I’ve found many solutions but none that seem to work with said OS and language.

How can I get PPID?

Answer 1

If you can use System.Management, it’s easy enough:

    private static int GetParentProcess(int Id)
    {
        int parentPid = 0;
        using (ManagementObject mo = new ManagementObject("win32_process.handle='" + Id.ToString() + "'"))
        {
            mo.Get();
            parentPid = Convert.ToInt32(mo["ParentProcessId"]);
        }
        return parentPid;
    }

Otherwise you may have to resort to P/Invoke calls via CreateToolhelp32Snapshot like this