Problem with Grouped CollectionView on Windows

[hartez]

Discussed in #7528

^{Originally posted by XamerDev May 27, 2022}
Hello I need to create grouped collectionView but I'm facing some issues on Windows. On android works well
Code

public class FoodGroup : ObservableCollection<Food>
        {
            public string Name { get; private set; }

            public FoodGroup(string name, ObservableCollection<Food> foods) : base(foods)
            {
                Name = name;
            }
        }
        public ObservableCollection<FoodGroup> Lines { get; private set; } = new ObservableCollection<FoodGroup>();

and when I trying add something to Lines collection:
Lines.Add(new FoodGroup("group1", new ObservableCollection<Food> { }));
I facing this issue:
"MauiApp3.ViewModels.JournalViewModel+FoodGroup" is not of type "MauiApp3.Models.Food" and cannot be used in this generic collection. Arg_ParamName_Name”

Issue appears only on Windows, on android emulator everything is working properly.
Is it something connecting with MAUI itself or it's just my misunderstanding of something?
Thank you

[homeyf]

Verified this issue with Visual Studio Enterprise 17.8.0 Preview 5.0. Can repro on windows platform.

[AntHillOracle]

Any status on this? I can also confirm the issue on Windows -- app crash on adding to ObservableCollection that backs a CollectionView with IsGrouped="true" property.

[jari-schuurman]

Any update on this? It is been two years and it still not fixed 👎 Honestly embarrassing to include this property when it just crashes your application

[dotnet-policy-service]

Hi @@hartez. We have added the "s/try-latest-version" label to this issue, which indicates that we'd like you to try and reproduce this issue on the latest available public version. This can happen because we think that this issue was fixed in a version that has just been released, or the information provided by you indicates that you might be working with an older version.

You can install the latest version by installing the latest Visual Studio (Preview) with the .NET MAUI workload installed. If the issue still persists, please let us know with any additional details and ideally a reproduction project provided through a GitHub repository.

This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.