Description
Description
Hello,
In MAUI, Layout.Children returns IList<IView>
In Xamarin, Layout.Children returned IList<View>
Unfortunately, the IView interface does not expose the vital View-related property BindingContext, where the View class does.
Therefore, in Xamarin.Forms, we could eg. execute such code with ease:
View view = MyStackLayout.Children.FirstOrDefault(c => c.BindingContext == MyViewModel);
Where in .NET MAUI we have to do small hack:
View view = MyStackLayout.Children.Cast<View>().FirstOrDefault(c => c.BindingContext == MyViewModel);
This adds an additional overhead needed for casting and complicates the code. This implies even more hacks when working with indices of Children property.
In Xamarin.Forms, we could do this for instance:
someList.Add(MyStackLayout.Children[i].BindingContext as MyViewModel);
Where in .NET MAUI we have to do multiple castings this time around, adding even more overhead to the processing:
someList.Add(MyStackLayout.Children.Cast<View>().ToArray()[i].BindingContext as MyViewModel);
Please either:
- add
BindingContextproperty to IView interface OR - change signature of
Layout.Childrenback to what Xamarin.Forms had -IList<View>instead ofIList<IView>
Public API Changes
- add
BindingContextproperty to IView interface OR - change signature of
Layout.Childrenback to what Xamarin.Forms had -IList<View>instead ofIList<IView>
View view = MyStackLayout.Children.FirstOrDefault(c => c.BindingContext == MyViewModel);
someList.Add(MyStackLayout.Children[i].BindingContext as MyViewModel);
Intended Use-Case
Easier API to work with BindingContext that does not require hacky Cast<View> in order to access BindingContext from Layout.Children elements.
This is for both performance and ease of use.