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Summary

Loading Forms sample projects LocalNetwork (libvlcsharp-samples) & LibVLCSharp.Forms.Sample yields a TypeLoadException for LibVLCSharp.Shared.MediaPlayerElement.IVideoControl when running the WPF sample; the associated Android projects in the same solution run fine.

Minimal project and steps to reproduce

Create solution from LocalNetwork using following Forms sample projects:

• LocalNetwork
• LocalNetwork.Android
• LocalNetwork.WPF

or from LibVLCSharp.Forms:

• LibVLCSharp.Forms.Sample
• LibVLCSharp.Forms.Sample.Android
• LibVLCSharp.Forms.Sample.WPF

Run WPF as default project.

What is the current bug behavior?

Running Android samples run fine. Running LocalNetwork.WPF yields following exception:

System.Windows.Markup.XamlParseException
  HResult=0x80131501
  Message='The invocation of the constructor on type 'LocalNetwork.WPF.MainWindow' that matches the specified binding constraints threw an exception.' Line number '6' and line position '9'.
  Source=PresentationFramework
  StackTrace:
   at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)

Inner Exception 1:
TypeLoadException: Could not load type 'LibVLCSharp.Shared.MediaPlayerElement.IVideoControl' from assembly 'LibVLCSharp, Version=3.4.5.0, Culture=neutral, PublicKeyToken=null'.

Running LibVLCSharp.Forms.Sample.WPF gives same TypeLoadException for LibVLCSharp.Forms.WPF.Sample.MainWindow.

Does it work on other plaforms? Does it work with the official VLC apps?

Android projects work fine.

Environment

• VS2019
• Windows 10
• LibVLCSharp 3.4.5
• VideoLAN.LibVLC.Android 3.2.0
• VideoLAN.LibVLC.Windows 3.0.11

Possible fixes

Possibly IVideoControl being set as Internal? Not sure why a MediaPlayerElement type exception as I was using VideoView?