CollectionView (.NET 11): document Windows handler update

[jfversluis]

Summary

• Documents the .NET 11 Preview 6 Windows CollectionView2 handler default.
• Explains the WinUI ItemsRepeater-based benefits, selection visual difference, and temporary opt-out path.
• Updates the CollectionView page ms.date to 07/08/2026.

Source verification

• Upstream MAUI PR: [WinUI][CV2] CollectionView2 Handler Implementation for Windows maui#34600
• Verified Preview 6 source for Windows handler registration, runtime feature default, MSBuild property mapping, and ItemsRepeater template usage.

Validation

• git diff --check
• Focused moniker balance check for docs/user-interface/controls/collectionview/index.md

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Internal previews

📄 File	🔗 Preview link
docs/user-interface/controls/collectionview/index.md	docs/user-interface/controls/collectionview/index

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

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[learn-build-service-prod]

Learn Build status updates of commit baa5ff8:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/user-interface/controls/collectionview/index.md	✅Succeeded	View (>=net-maui-8.0)

For more details, please refer to the build report.

[Copilot]

Pull request overview

Documents the .NET MAUI (.NET 11) Windows CollectionView default handler change so readers understand the new ItemsRepeater-based behavior and how to temporarily opt out if needed.

Changes:

• Updates ms.date for the CollectionView docs page.
• Adds a .NET 11+ monikered section describing the default Windows CollectionViewHandler2, behavioral differences (virtualization/scrolling/selection visuals), and an MSBuild opt-out property.

Show a summary per file

File	Description
docs/user-interface/controls/collectionview/index.md	Adds .NET 11 Windows handler guidance (default, behavior differences, opt-out) and updates page date.

Copilot's findings

• Files reviewed: 1/1 changed files
• Comments generated: 1

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
For any questions: Try searching the learn.microsoft.com contributor guides or post your question in the Learn support channel.

[learn-build-service-prod]

Learn Build status updates of commit ecc3354:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/user-interface/controls/collectionview/index.md	✅Succeeded	View (>=net-maui-8.0)

For more details, please refer to the build report.