[Windows] ListView ItemsSource refreshing throws error after 60+ items

[rachelkang]

Description

This issue describes point 1 of #6377

Windows can't display more than 60ish item in ListView, trying to put 65 objects list as ItemsSource crashes Windows app with
System.Runtime.InteropServices.COMException: '0x88000FA8'
On android app this does not happen and I tried 80 objects in list and it showed them all.

Repro: https://github.com/dotnet/maui/files/8536434/MauiApp3.zip

Steps to Reproduce

1. Download https://github.com/dotnet/maui/files/8536434/MauiApp3.zip and open in VS
2. Run the project on Windows
3. When the app launches, click on the button 60+ times
4. See the System.Runtime.InteropServices.COMException: '0x88000FA8' error thrown

Version with bug

Release Candidate 3

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

WinUI

Did you find any workaround?

No response

Relevant log output

No response

[DavidCarKc]

Possible workaround:

1. declare empty ObservableCollection
   ObservableCollection collection = new ObservableCollection();
2. change if (answer) line to:
   if (answer) {
   while (collection.Count > 0) { collection.RemoveAt(0); }
   foreach (SmallObject smallObject in smallList) {
   collection.Add(smallObject);
   }
   collectionView1.ItemsSource = collection; }

Now it will display 100+ items but this won't work properly on android if you try to refresh the list after displaying it once.

If you try to get the whole 60+ items list in the declatation of the OC then the windows app will crash on trying to display it.

if (answer) { ObservableCollection collection = new ObservableCollection(smallList); collectionView1.ItemsSource = collection; }

Also possible workaround: adding new objects instead to the list, directly to ObservableCollection, but then after first refresh it will autorefresh after each added object.
Also possible: Using CollectionView instead of ListView

PS
I just don't understand why is it called ListView if it has so many problems displaying lists.

[ghost]

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.

[rmarinho]

I have tested this and it's not a issue anymore.