[Windows] ListView ScrollTo Method Throws NullReferenceException

[nivetha-nagalingam]

Description

When using ListView's ScrollTo method with a custom List implementation that implements INotifyCollectionChanged, a NullReferenceException occurs in the ListViewRenderer on Windows.

Steps to Reproduce

• Create new .NET MAUI project
• Implement custom List class implementing INotifyCollectionChanged
• Create ListView with 1000+ items using custom List
• Call ScrollTo() to last item
• Click button to replace last item
• Run the project and Observe NullReferenceException in ListViewRenderer
• Issue3788ListView.zip

Expected Behavior:

• ListView should visible and scroll to last item
• When click the button , Replacing item should update single item only

Actual Behavior:

• NullReferenceException thrown when ScrollTo is called
• Exception occurs in ListViewRenderer.cs

Link to public reproduction project repository

No response

Version with bug

9.0.10 SR1

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

Windows SDK 10.0.19041.0

Did you find any workaround?

No response

Relevant log output

[similar-issues-ai]

We've found some similar issues:

• [Windows] Nullpointer from ListView.ScrollTo #24347 , similarity score: 84%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

Note: You can give me feedback by 👍 or 👎 this comment.

[ninachen03]

Could you provide a sample project for us to investigate it further?
Looking forward to your reply!

[nivetha-nagalingam]

Here, I have attached the project file for your investigation.Issue3788ListView.zip
And also Please refer to the file attached in the description for further details.

[ninachen03]

This issue has been verified using Visual Studio 17.13.0 Preview 1.0(9.0.12 & 8.0.100 & 8.0.3). Can repro this issue at Window platform.

Issue4973.zip