You're right, I edited my xaml to fix the missing b: prefix. Marking this as solved then.

If you want to reuse interactivity triggers in several instances of a control you can define them in the Style by using the StyleInteraction attached property. For example, in our QuestLog sample we are doing that: https://github.com/Noesis/Tutorials/blob/master/Samples/QuestLog/C%2B%2B/Data/Resourc...

I'm not getting how exactly I can bind it from C# side of it. Can you show example of TextPredicate? The ViewModel should expose a property with the filter predicate object: public class MyViewModel { public StringFilterPredicate TextPredicate { get; private set; } public string SearchText { get { ...

Your solution of defining a base class with the concrete type looks the best approach to make it work in both Blend and Noesis.
I don't see any other way to workaround the lack of TypeArguments, sorry.

HitTestFilterBehavior ContinueSkipSelfAndChildren: Do not hit test against the current Visual or its descendants ContinueSkipChildren: Hit test against the current Visual, but not its descendants ContinueSkipSelf: Do not hit test against the current Visual, but hit test against its descendants Cont...

This is a simple xaml using the CollectionFilterBehavior: <Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:b="http://schemas.microsoft.com/xaml/behaviors" xmlns:noesis="clr-namespac...

It may seem strange but the HitTest method without callbacks returns hits for all visuals, even if they have IsHitTestVisible=False (also those with Visibility=Hidden, or Opacity=0, or IsEnabled=False). But you can use the version with callbacks to supply your own Filter and Result callbacks: public...

Happy to help, marking this as solved.

Boxing a nullable will return null if it has no value or will box the underlying type: Ptr<BoxedValue> boxed1 = Boxing::Box(Nullable<float>()); // boxed1 will be nullptr Ptr<BoxedValue> boxed2 = Boxing::Box(Nullable<float>(123.0f)); // boxed2 will store a simple float So having a float value it does...

I've created ticket #2489 to track this issue.