[Bug] MediaElement Event OnMediaEnded throw exception WRONG THREAD when put new path on Source media

[behemothe]

When rise Event OnMediaEnded I want to put a new path on the Source of the media and this throw an exception WRONG THREAD ### Description

XAML : <toolkit:MediaElement x:Name="video" ShouldAutoPlay="True" ShouldShowPlaybackControls="True" HeightRequest="{OnPlatform 150, Android=50}" BackgroundColor="Black" IsVisible="true" MediaEnded="OnMediaEnded" />

Code: private void OnMediaEnded(object sender, EventArgs e) { PlayNextFichierMusic(); }

internal void PlayNextFichierMusic() { if (ecouter.NomFichierImage == "pause.png") { string path = ecouter.GetNextFichierMusic(RoutinesCommunes.SUFFIXE_ECOUTER_LA_MUSIC); video.Source = path; <---- Exception WRONG THREAD video.Play(); } }

Stack Trace

System.Runtime.InteropServices.COMException HResult=0x8001010E Message=L’application a appelé une interface qui était maintenue en ordre pour un thread différent. (0x8001010E (RPC_E_WRONG_THREAD)) Source=WinRT.Runtime Arborescence des appels de procédure : à WinRT.ExceptionHelpers.g__Throw|20_0(Int32 hr) à ABI.Microsoft.UI.Xaml.IUIElementMethods.InvalidateMeasure(IObjectReference _obj) à Microsoft.UI.Xaml.UIElement.InvalidateMeasure() à Microsoft.Maui.Platform.ViewExtensions.InvalidateMeasure(FrameworkElement platformView, IView view) à Microsoft.Maui.Handlers.ViewHandler.MapInvalidateMeasure(IViewHandler handler, IView view, Object args) à Microsoft.Maui.Handlers.ElementHandler.Invoke(String command, Object args) à Microsoft.Maui.Controls.VisualElement.InvalidateMeasureOverride() à Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IView.InvalidateMeasure() à Microsoft.Maui.Controls.VisualElement.InvalidateMeasureInternal(InvalidationTrigger trigger) à Microsoft.Maui.Controls.VisualElement.InvalidateMeasure() à CommunityToolkit.Maui.Views.MediaElement.OnSourcePropertyChanged(MediaSource newValue) à CommunityToolkit.Maui.Views.MediaElement.OnSourcePropertyChanged(BindableObject bindable, Object oldValue, Object newValue) à Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, SetterSpecificity specificity, Boolean silent) à Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value) à CommunityToolkit.Maui.Views.MediaElement.set_Source(MediaSource value) à MaMusique.Views.Ecouter.PlayNextFichierMusic() dans F:\Users\Behem\Sources\MaMusique MAUI 8.0\MaMusique MAUI 8.0\Views\Ecouter.xaml.cs :ligne 42 à MaMusique.Views.Ecouter.OnMediaEnded(Object sender, EventArgs e) dans F:\Users\Behem\Sources\MaMusique MAUI 8.0\MaMusique MAUI 8.0\Views\Ecouter.xaml.cs :ligne 126 à System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor) à System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)

WinRT.Runtime.dll!WinRT.ExceptionHelpers.ThrowExceptionForHR.__Throw|20_0(int hr)   Inconnu
Microsoft.WinUI.dll!ABI.Microsoft.UI.Xaml.IUIElementMethods.InvalidateMeasure(WinRT.IObjectReference _obj)  Inconnu
Microsoft.WinUI.dll!Microsoft.UI.Xaml.UIElement.InvalidateMeasure() Inconnu
Microsoft.Maui.dll!Microsoft.Maui.Platform.ViewExtensions.InvalidateMeasure(Microsoft.UI.Xaml.FrameworkElement platformView, Microsoft.Maui.IView view) Inconnu
Microsoft.Maui.dll!Microsoft.Maui.Handlers.ViewHandler.MapInvalidateMeasure(Microsoft.Maui.IViewHandler handler, Microsoft.Maui.IView view, object args)    Inconnu
Microsoft.Maui.dll!Microsoft.Maui.Handlers.ElementHandler.Invoke(string command, object args)   Inconnu
Microsoft.Maui.Controls.dll!Microsoft.Maui.Controls.VisualElement.InvalidateMeasureOverride()   Inconnu
Microsoft.Maui.Controls.dll!Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IView.InvalidateMeasure()  Inconnu
Microsoft.Maui.Controls.dll!Microsoft.Maui.Controls.VisualElement.InvalidateMeasureInternal(Microsoft.Maui.Controls.Internals.InvalidationTrigger trigger)  Inconnu
Microsoft.Maui.Controls.dll!Microsoft.Maui.Controls.VisualElement.InvalidateMeasure()   Inconnu
CommunityToolkit.Maui.MediaElement.dll!CommunityToolkit.Maui.Views.MediaElement.OnSourcePropertyChanged(CommunityToolkit.Maui.Views.MediaSource newValue)   Inconnu
CommunityToolkit.Maui.MediaElement.dll!CommunityToolkit.Maui.Views.MediaElement.OnSourcePropertyChanged(Microsoft.Maui.Controls.BindableObject bindable, object oldValue, object newValue)  Inconnu
Microsoft.Maui.Controls.dll!Microsoft.Maui.Controls.BindableObject.SetValueActual(Microsoft.Maui.Controls.BindableProperty property, Microsoft.Maui.Controls.BindableObject.BindablePropertyContext context, object value, bool currentlyApplying, Microsoft.Maui.Controls.Internals.SetValueFlags attributes, Microsoft.Maui.Controls.SetterSpecificity specificity, bool silent)  Inconnu
Microsoft.Maui.Controls.dll!Microsoft.Maui.Controls.BindableObject.SetValue(Microsoft.Maui.Controls.BindableProperty property, object value)    Inconnu
CommunityToolkit.Maui.MediaElement.dll!CommunityToolkit.Maui.Views.MediaElement.Source.set(CommunityToolkit.Maui.Views.MediaSource value)   Inconnu

MaMusique MAUI 8.0.dll!MaMusique.Views.Ecouter.PlayNextFichierMusic() Ligne 42 C# MaMusique MAUI 8.0.dll!MaMusique.Views.Ecouter.OnMediaEnded(object sender, System.EventArgs e) Ligne 126 C# [Transition Natif à Managé] [Transition Managé à Natif] System.Private.CoreLib.dll!System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(object obj, System.Span

[bijington]

I think this belongs in the .NET MAUI Community Toolkit repo at: https://github.com/CommunityToolkit/Maui

But that being said have you tried using MainThread https://learn.microsoft.com/dotnet/maui/platform-integration/appmodel/main-thread to make sure that you are running on the correct thread?

[behemothe]

I think this belongs in the .NET MAUI Community Toolkit repo at: https://github.com/CommunityToolkit/Maui

But that being said have you tried using MainThread https://learn.microsoft.com/dotnet/maui/platform-integration/appmodel/main-thread to make sure that you are running on the correct thread?

Yes, think you very much, I resolve all my problem with MainThread.