IsPaneOpen property in Hamburger Menu is not properly set after opening/closing pane

[wornr]

Hello,

I'm trying to implement (with MVVM) auto closing hamburger pane after selection is done. To make this happen I've tried to bind IsPaneOpen to IsPaneOpened property in my view model.

<mahApps:HamburgerMenu IsPaneOpen="{Binding IsPaneOpened}" ...>

But it seems that IsPaneOpen is not setting my property properly when I open/close pane with this button.

Is that normal behaviour or am I doing something wrong?

Btw. In my opinion this property has really weird explanation.

Environment

MahApps.Metro v1.5.0
Windows OS 10
Visual Studio 2017
.NET Framework 4.5.2

[punker76]

@wornr The IsPaneOpen is not automatically set, this is in your hand e.g https://github.com/MahApps/MahApps.Metro/blob/develop/src/MahApps.Metro.Samples/MahApps.Metro.Demo/MahApps.Metro.Demo.Shared/ExampleViews/HamburgerMenuSample.xaml.cs#L23-L27. The wrong documentation will be fixed.

[punker76]

@wornr A short tip, set the mode explicit: IsPaneOpen="{Binding IsPaneOpened, Mode=TwoWay}"

[wornr]

I didn't realize it's so simple. Now everything works like a charm. Thank for fast reply and help.

[punker76]

@wornr ok, I will add FrameworkPropertyMetadataOptions.BindsTwoWayByDefault to this property.