Property Binding not working on `ParameterTemplateSelector` item

[JhonH3avy]

Current behavior

When using ParameterTemplateSelector, the moment I define a DataTemplate with a custom UserControl, the binding of the view model with the custom control is not working due to what if seems a reflection error, from the PropertyBindingHelper and this make the DataTemplate useless because the setted value in the custom control is never to the view model.

Expected behavior

The view model should bind without problem with the property on the custom control and get the notification to set a new value when the custom control sets a new value.

How to reproduce it (as minimally and precisely as possible)

Here is a repo that shows the problem:
https://github.com/JhonH3avy/DatePickerControl

Environment

Nuget Package:
Uno.UI -> 2.1.0-dev.1345

Package Version(s):

Affected platform(s):

• iOS
• Android
• WebAssembly
• WebAssembly renderers for Xamarin.Forms
• macOS
• Windows
• Build tasks
• Solution Templates

Visual Studio:

• 2017 (version: )
• 2019 (version: )
• for Mac (version: )

Relevant plugins:

• Resharper (version: )

Anything else we need to know?

The ParameterTemplateSelector is inside a ContentDialog (not sure if this can lead to the previously mentioned behavior) and when teh ContentDialog shows it sets the view model for the ParameterTemplateSelector.

[github-actions]

Hey there — just a heads-up that this issue has been quiet for over a year. If there’s no update or comment in the next 10 days, it’ll be closed automatically. Feel free to remove the stale label or drop a note to keep it open.