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Related https://github.com/dotnet/winforms/issues/13442 ## Proposed changes Add unit test file:DataGridViewComboBoxCellTest.cs for public/protected methods of the DataGridViewComboBoxCell.cs ###### Microsoft Reviewers: [Open in CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/dotnet/winforms/pull/13654)

Zheng-Li01

Fix issue#9807 review 2nd (Replaces PR #11867) DRAFT

2

Fixes #9807 ## Proposed changes - Add Remove dependance on WebClient for VB FileDownload by using HttpClient - Upload still uses WebClient that also needs to be done as a...

paul1956

Enable nullability for `ToolStripTemplateNode`

5

Enable nullability for `ToolStripTemplateNode` ###### Microsoft Reviewers: [Open in CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/dotnet/winforms/pull/13401)

LeafShi1

Mods for #12042

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Fixes #12042 - TreeNode and ListItem not displaying in dark mode during editing, even though application is set to be in dark mode. ## Proposed changes If the application is...

pcblues

Add tests for Clipboard JSON and raw data scenarios

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## Overview This PR validates that Clipboard and DataObject support specialized data retrieval features, particularly for working with raw data and NRBF serialized content. It adds comprehensive tests to document...

Copilot

Add thorough tests for partially supported NRBF types

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This PR adds comprehensive tests for `Hashtable` serialization handling in `CoreNrbfSerializer` to ensure we're properly handling instances with unsupported content and not losing data over fields we don't currently handle...

Copilot

Cleanup MissingPropertySerializationConfigurationAnalyzer

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Fixes # ## Proposed changes - - - ## Customer Impact - - ## Regression? - Yes / No ## Risk - ## Screenshots ### Before ### After ## Test...

Youssef1313

Addresses #12696, #12697 (Mentioning the latter just for same topic. I do not think, this is an issue really.) ###### Microsoft Reviewers: [Open in CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/dotnet/winforms/pull/13564)

KlausLoeffelmann

Fix All Dark mode Visual Style Renders

3

Fixes #11950 Fixes #11949 Fixes #12909 Fixes #11893 Fixes #11901 Fixes #12040 ## Proposed changes - Enhanced dark mode visual style generation and selection logic, with custom handling for Button,...

memoarfaa

Target size of "Alphabetical" and "Categorized" buttons is 20*20 which is less than 24*24: A11y_WinForms.NETRuntime_RemainingControls_TargetSize.

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### GitHub Tags #A11ySev3; #A11yTCS; #WCAG2.5.8; #Win32; #DesktopApp; #Win11; #WinForms .NET Runtime; #BM_WinForms.NETRuntime_Win32_June2025; #TargetSize; #A11yWCAG2.2; ### Environment Details Application Name: WinForms Runtime Microsoft Windows 11 Enterprise (24H2) Build on 26100.4061...

shindepra