Slider's Thumb.DragStarted and Thumb.DragCompleted aren't working

[define-private-public]

I have this XAML:

        <Slider DockPanel.Dock="Right"
                Orientation="Horizontal"
                Value="{Binding PlaybackSliderValue}"
                Thumb.DragStarted="OnPlaybackSliderDragStarted"
                Thumb.DragCompleted="OnPlaybackSliderDragCompleted"
                Minimum="0"
                Maximum="1000000"/>

I see in the Avalonia repo that DragStarted and DragCompleted are in Thumb, but when I tried to attach my handlers to them, I was treated with this at the dotnet run level:

/home/ben/Projects/AvaloniaSamples/BassoonJukebox/Views/JukeboxView.xaml(68,10,68,10): Avalonia error XAMLIL: Unable to resolve suitable regular or attached property DragStarted on type Avalonia.Controls:Avalonia.Controls.Primitives.Thumb (line 68 position 10) Line 68, position 10. [/home/ben/Projects/AvaloniaSamples/BassoonJukebox/BassoonJukebox.csproj]

The build failed. Fix the build errors and run again.

[define-private-public]

If I wanted to implement support for this myself and then submit the PR, what would I need to do?

[jmacato]

If you want to override the properties of slider, it's best if you just make a new control with Slider as base class... but if you need some kind of slider for a media player, take a look at this code: https://github.com/jmacato/Synfonia/blob/master/Synfonia.Gui/Controls/SeekSlider.cs

[define-private-public]

I'm moreso trying to make some simple demo apps for Avalonia right now. (Mainly as a way to learn the API). I'm trying to port over a tiny audio player app I made in GtkSharp. The slider was used to show where playback was for the user, but also they could click on the thumb and drag to to change the location in the music.

[xiaokun]

I had the same problem. This bug seems to be still unresolved in the latest version (0.10.17). Is there any other solution to this problem now? Many thanks.

[maxkatz6]

Routed attached events are not supported in the XAML,
duplicate of #4009

[maxkatz6]

@xiaokun you can do it from the code behind or write a behavior (using Behaviors SDK).