Attempted to read or write protected memory when a non-main window closed. Libvlcsharp

[RickyYCheng]

I'm tring to use libvlcsharp to show a video on the begin of the app according to some demand.
So i'm tring to add Opened Event on main view to open a new window to play video:

Opened="OnOpened">

        private void OnOpened(object sender, EventArgs e)
        {
            //new PlayVideoView().Show();
        }

then i'm tring to build the video view window like this:

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:vlc="clr-namespace:LibVLCSharp.Avalonia;assembly=LibVLCSharp.Avalonia"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="WasteClassifierUI.PlayVideoView"
        Title="PlayVideoView" Opened="OnOpened" Closed="OnClosed">


	<vlc:VideoView x:Name="playVideoView" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>	

</Window>

the .cs code of this xaml like this:

using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using Avalonia.Threading;
using LibVLCSharp.Avalonia;
using LibVLCSharp.Shared;
using System;
using System.Threading;

namespace WasteClassifierUI
{
    public class PlayVideoView : Window
    {
        VideoView videoView;
        private LibVLC _libVLC;
        public PlayVideoView()
        {
            InitializeComponent();
            _libVLC = new LibVLC();
            videoView = this.Get<VideoView>("playVideoView");
            videoView.MediaPlayer = new MediaPlayer(_libVLC);


#if DEBUG
            this.AttachDevTools();
#endif
        }

        private void InitializeComponent()
        {
            AvaloniaXamlLoader.Load(this);
        }

        private void OnOpened(object sender, EventArgs e)
        {
            if (!videoView.MediaPlayer!.IsPlaying)
            {
                videoView.MediaPlayer.Play(new Media(_libVLC, @"C:\Users\Ricky\Videos\Captures\2.mp4"));
            }
            videoView.MediaPlayer.EndReached += MediaPlayer_EndReached;
        }

        private void MediaPlayer_EndReached(object? sender, EventArgs e)
        {
            try
            {
                Dispatcher.UIThread.InvokeAsync(Close);
            }
            catch { }
        }
        private void OnClosed(object sender, EventArgs e)
        {
            try
            {
                _libVLC.Dispose();
                videoView.MediaPlayer!.Media!.Dispose();
                videoView.MediaPlayer!.Dispose();
            }
            catch { }
        }
    }
}

According to a issue, to close the window when the mediaplayer endreached, i used this slice of code to close:
Dispatcher.UIThread.InvokeAsync(Close);
after that, the Program.cs will throw an exception:
Attempted to read or write protected memory
Position:

        public static void Main(string[] args)
        {
            BuildAvaloniaApp().StartWithClassicDesktopLifetime(args, ShutdownMode.OnMainWindowClose);
            // here
        }
        // Avalonia configuration, don't remove; also used by visual designer.
        public static AppBuilder BuildAvaloniaApp()
            => AppBuilder.Configure<App>()
                .UsePlatformDetect()
                .LogToTrace();

here's the issue about the code:
donandren/vlcsharpavalonia#12
I wanna know if it'a a bug or i just use the wrong code. Have a good time! :)

PS: https://github.com/videolan/libvlcsharp
i just used nuget to install libvlcsharp to my pc, which also need vlc installed on the mechine.

[RickyYCheng]

Sorry, I've found the problem, still i donnot know why.
if i trying to do this will solve the problem:

        private void OnClosed(object sender, EventArgs e)
        {
            try
            {
                // Dont do that!
                //_libVLC.Dispose();
                //videoView.MediaPlayer!.Media!.Dispose();
                //videoView.MediaPlayer!.Dispose();
                
            }
            catch { }
        }

I'll close the issue imediately. :) Sorry.

[RickyYCheng]

Sorry, I've found the problem, still i donnot know why.
if i trying to do this will solve the problem:

        private void OnClosed(object sender, EventArgs e)
        {
            try
            {
                // Dont do that!
                //_libVLC.Dispose();
                //videoView.MediaPlayer!.Media!.Dispose();
                //videoView.MediaPlayer!.Dispose();
                
            }
            catch { }
        }

I'll close the issue imediately. :) Sorry.

And I'll also make a report to the libvlcsharp.avalonia.

[RickyYCheng]

Sorry I found that i made the discussion but not pull a issue :(.
If you Avalonia guys found this, and feel unplease, you can delete this whatever.
It;s my mistake.