Implement ListViewItem wrapper for databinding events

[Copilot]

Implementation Plan for ListViewItem

• Create ListViewItemType enum with DataItem, InsertItem, and EmptyItem values
• Create ListViewItem base class with ItemType and DisplayIndex properties
• Create ListViewDataItem class extending ListViewItem with DataItem and DataItemIndex properties
• Update ListViewItemEventArgs to use ListViewItem instead of raw object
• Update ListView component to create and use ListViewItem instances (both simple and grouped rendering)
• Add unit tests for ListViewItem functionality (including grouped items - 441 tests passing)
• Update documentation with ListViewItem details and usage examples
• Fix indentation issues in ListView.razor
• Ensure ItemDataBound events fire consistently in both simple and grouped rendering paths
• Create ListView ItemDataBound sample page at /ControlSamples/ListView/ItemDataBound
• Add Playwright test ListView_ItemDataBound_DisplaysItemProperties
• Address all code review feedback
• Fix integration test failures (all 62 tests passing)
• Fix Playwright test report generation (TRX file now generated properly)

Summary

Successfully implemented ListViewItem wrapper classes matching the Web Forms API. All 441 unit tests and 62 integration tests pass.

Original prompt

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This section details on the original issue you should resolve

<issue_title>ListView: Implement ListViewItem</issue_title>
<issue_description>In order for the ListView's databinding events to trigger and function similarly to the Web Forms version, a wrapper ListViewItem object needs to be created.

Docs for ListViewItem at: https://docs.microsoft.com/en-us/dotnet/api/system.web.ui.webcontrols.listviewitem?view=netframework-4.8</issue_description>

<agent_instructions>Review if this issue is completed and if so, close it. If not, then fix it</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes ListView: Implement ListViewItem #29

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[csharpfritz]

@copilot Let's add some samples showing this feature, and Playwright tests to exercise those samples

[Copilot]

@copilot Let's add some samples showing this feature, and Playwright tests to exercise those samples

Added ListView ItemDataBound sample page and Playwright test in commit a57330b.

Sample Page: /ControlSamples/ListView/ItemDataBound

• Demonstrates using OnItemDataBound event to access ListViewItem and ListViewDataItem properties
• Shows event counter tracking how many events fired
• Includes code example showing how to access DataItemIndex, DisplayIndex, ItemType, and DataItem
• Added to navigation menu alongside existing ListView samples

Playwright Test: ListView_ItemDataBound_DisplaysItemProperties

• Verifies page loads without errors
• Checks that table rows render correctly
• Validates event counter shows events fired
• Tests event details section is visible

Note: The Playwright test is experiencing timeout issues during navigation that appear to be related to the test infrastructure (server startup/port configuration). The sample page itself builds and renders correctly.

[csharpfritz]

@copilot There are a few failing integration tests. Additionally, the integration test report is failing because it cant find a report from the Playwright tests to format

Investigate and fix

[Copilot]

@copilot There are a few failing integration tests. Additionally, the integration test report is failing because it cant find a report from the Playwright tests to format

Investigate and fix

Fixed in commit acb2320.

Integration Test Issues Resolved:

1. Playwright Browser Installation: Tests were failing because chromium_headless_shell wasn't installed. The CI workflow now properly installs Playwright browsers with --with-deps flag.

2. ItemDataBound Page Timeout: The sample page was timing out because it used WaitUntilState.NetworkIdle, which never completed due to Blazor Server's persistent SignalR connection. Changed to WaitUntilState.DOMContentLoaded with explicit wait for component rendering.

3. TRX Report Generation: The integration test results file is now properly generated at samples/AfterBlazorServerSide.Tests/TestResults/integration-test-results.trx.

Test Results:

• ✅ All 62 integration tests passing
• ✅ All 441 unit tests passing
• ✅ TRX file generated for test reporter

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