Get Real Process, related to ApplicationFrameHost

FindHostedProcess.cs

public class WinAPIFunctions
{
    //Used to get Handle for Foreground Window
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern IntPtr GetForegroundWindow();

    //Used to get ID of any Window
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern int GetWindowThreadProcessId(IntPtr hWnd, out int lpdwProcessId);
    public delegate bool WindowEnumProc(IntPtr hwnd, IntPtr lparam);

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool EnumChildWindows(IntPtr hwnd, WindowEnumProc callback, IntPtr lParam);

    public static int GetWindowProcessId(IntPtr hwnd)
    {
        int pid;
        GetWindowThreadProcessId(hwnd, out pid);
        return pid;
    }

    public static IntPtr GetforegroundWindow()
    {
        return GetForegroundWindow();
    }
}

class FindHostedProcess
{
    public Timer MyTimer { get; set; }
    private Process _realProcess;
    public FindHostedProcess()
    {
        MyTimer = new Timer(TimerCallback, null, 0, 1000);
        Console.ReadKey();
    }

    private void TimerCallback(object state)
    {
        var foregroundProcess = Process.GetProcessById(WinAPIFunctions.GetWindowProcessId(WinAPIFunctions.GetforegroundWindow()));
        if (foregroundProcess.ProcessName == "ApplicationFrameHost")
        {
            foregroundProcess = GetRealProcess(foregroundProcess);
        }
        Console.WriteLine(foregroundProcess.ProcessName);
    }

    private Process GetRealProcess(Process foregroundProcess)
    {
        WinAPIFunctions.EnumChildWindows(foregroundProcess.MainWindowHandle, ChildWindowCallback, IntPtr.Zero);
        return _realProcess;
    }

    private bool ChildWindowCallback(IntPtr hwnd, IntPtr lparam)
    {
        var process = Process.GetProcessById(WinAPIFunctions.GetWindowProcessId(hwnd));
        if (process.ProcessName != "ApplicationFrameHost")
        {
            _realProcess = process;
        }
        return true;
    }
}

https://stackoverflow.com/questions/39702704/connecting-uwp-apps-hosted-by-applicationframehost-to-their-real-processes