How can I get real process ids of running application or window

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C#

C#6.0

ASP.NET-Core

Hi,

I get the process ids of the applications or windows opened via windows service and log them, but I noticed that, for example, the tabs opened in chrome always give the same PID, and at the same time, it always gives the pid of "explorer.exe" in the window that opens while the file is being copied. Do I have a chance to get real pids in such processes?

What I have tried:

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int GetWindowThreadProcessId(HandleRef handle, out int processId);

public static int GetRealProcessID(IntPtr WindowHandle)
        {
            int parentProcessId;

            GetWindowThreadProcessId(new HandleRef(null, WindowHandle), out parentProcessId);

            return parentProcessId;
        }