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[Regression] Clipboard.GetDataObject().GetImage() returns null on .NET 10

💥 regression-releaseRegression from a public releaseRegression from a public release

area-System.DrawingSystem.Drawing issuesSystem.Drawing issues

Status: Closed (completed).

#14423 In dotnet/winforms;

· by TravisEz13 was closed on Apr 13, 2026

[Tracking] CSWin32 Migration tasks for .NET 9 Preview 1

area-Interop

Status: Closed (completed).

#10624 In dotnet/winforms;

· by merriemcgaw was closed on Feb 18, 2026

[HDPI] SystemAware - wrong Form.ClientSize with DPI other than 100%

area-HDPIHDPI, not specific to Dpi mode of appHDPI, not specific to Dpi mode of app

area-HDPI-PMv2Issues related to high DPI PerMonitorV2 modeIssues related to high DPI PerMonitorV2 mode

area-HDPI-SAIssues related to high DPI SystemAware modeIssues related to high DPI SystemAware mode

Status: Closed (completed).

#12270 In dotnet/winforms;

· by kirsan31 was closed on Feb 6, 2026

Refactor IArrangedElement to remove PropertyStore usage

Status: Closed (abandoned).

dotnet/winformsnumber 10788

#10788 In dotnet/winforms;

· by elachlan was closed on Jul 18, 2024

Extend PayloadReader APIs to meet the WinForms requirements

Status: Closed (abandoned).

dotnet/winformsnumber 11341

#11341 In dotnet/winforms;

· by adamsitnik was closed on Jul 25, 2024

Adds new tab to on DemoConsole, to contain instances of missing desig…

Status: Merged (completed).

dotnet/winformsnumber 11678

#11678 In dotnet/winforms;

· by ricardobossan was closed on Jul 23, 2024

[release/10.0] Always create new small icons for forms

servicing-approved.NET Shiproom approved the PR for merge.NET Shiproom approved the PR for merge

Status: Merged (completed).

dotnet/winformsnumber 13984

#13984 In dotnet/winforms;

· by github-actions was closed on Oct 23, 2025

[release/10.0] Handle unterminated string data in DataObject

servicing-approved.NET Shiproom approved the PR for merge.NET Shiproom approved the PR for merge

Status: Merged (completed).

dotnet/winformsnumber 13988

#13988 In dotnet/winforms;

· by github-actions was closed on Oct 23, 2025

Move LinkLabel text region dispose back to EnsureRun

servicing-consider.NET Shiproom label indicating a PR seeks to enter into a branch under Tell-Mode criteria.NET Shiproom label indicating a PR seeks to enter into a branch under Tell-Mode criteria

Status: Merged (completed).

dotnet/winformsnumber 13978

#13978 In dotnet/winforms;

· by JeremyKuhne was closed on Oct 21, 2025

[release/10.0] Move LinkLabel text region dispose back to EnsureRun

servicing-approved.NET Shiproom approved the PR for merge.NET Shiproom approved the PR for merge

Status: Merged (completed).

dotnet/winformsnumber 13979

#13979 In dotnet/winforms;

· by github-actions was closed on Oct 22, 2025

[release/10.0] Fix Region update logic to ensure Region updates are applied correctly when handle is created

💥 regression-previewRegression from a preview releaseRegression from a preview release

servicing-approved.NET Shiproom approved the PR for merge.NET Shiproom approved the PR for merge

Status: Merged (completed).

dotnet/winformsnumber 14035

#14035 In dotnet/winforms;

· by github-actions was closed on Nov 11, 2025

The ToolStripMenuItem has extra numbers and the other items do not have selection borders on ContextMenuStrip control in DemoConsole application

Status: Closed (completed).

#11700 In dotnet/winforms;

· by MelonWang1 was closed on Jun 20, 2025

Always pass back a managed IDataObject if we can get the original

area-ClipboardIssues related to ClipboardIssues related to Clipboard

area-Serialization-BinaryFormatter-FeatureWorkFeature work under the general area of BinaryFormatter related serializationFeature work under the general area of BinaryFormatter related serialization

Status: Closed (completed).

Feature

#13051 In dotnet/winforms;

· by JeremyKuhne was closed on May 20, 2025

Screen reader announcing incorrect row count information while navigating the table data: A11y_WinForm.NETRuntime_MonitorMrationsWindow_InfoAndRelationship.

a11y-MASHigh Priority - Accessibility violation of Microsoft Accessibility StandardsHigh Priority - Accessibility violation of Microsoft Accessibility Standards

tenet-accessibilityMAS violation, UIA issue; problems with accessibility standardsMAS violation, UIA issue; problems with accessibility standards

Status: Closed (completed).

Bug

#13672 In dotnet/winforms;

· by shindepra was closed on Oct 27, 2025

Clipboard.GetData performs improper validation

area-ClipboardIssues related to ClipboardIssues related to Clipboard

Status: Closed (completed).

Bug

#13929 In dotnet/winforms;

· by kevingosse was closed on Oct 23, 2025

Ensure that all WinForms controls have unit tests coverage for public APIs

🚧 work in progressWork that is current in progressWork that is current in progress

test-enhancementImprovements of test source codeImprovements of test source code

Status: Closed (completed).

#10453 In dotnet/winforms;

· by Tanya-Solyanik was closed on May 20, 2025

Clipboard.SetDataObject method regression in .NET 9.0.100-rc.2

💥 regression-releaseRegression from a public releaseRegression from a public release

🚧 work in progressWork that is current in progressWork that is current in progress

area-ClipboardIssues related to ClipboardIssues related to Clipboard

servicing-approved.NET Shiproom approved the PR for merge.NET Shiproom approved the PR for merge

Status: Closed (completed).

#12789 In dotnet/winforms;

· by akhromushkin was closed on Jan 21, 2025

RichTextBox always sends its entire contents as an accessibility event on focus.

🚧 work in progressWork that is current in progressWork that is current in progress

area-controls-RichEdit

tenet-accessibilityMAS violation, UIA issue; problems with accessibility standardsMAS violation, UIA issue; problems with accessibility standards

Status: Not planned (skipped).

Bug

#12772 In dotnet/winforms;

· by trypsynth was closed on Apr 16, 2025

Move unit tests for shared components to System.Private.Windows.Core.Tests

priority-2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

Status: Not planned (skipped).

#12862 In dotnet/winforms;

· by Tanya-Solyanik was closed on Feb 18, 2025

Run ILLinker on Winforms codebase and diff to identify deadcode

area-ILLinker/AOT

area-Trimming

enhancementProduct code improvement that does NOT require public API changes/additionsProduct code improvement that does NOT require public API changes/additions

Status: Closed (completed).

#186 In dotnet/winforms;

· by ericstj was closed on Apr 22, 2025

Add unit tests to System.Windows.Forms.Design.ControlDesigner

🚧 work in progressWork that is current in progressWork that is current in progress

epicGroups multiple user stories. Can be grouped under a theme.Groups multiple user stories. Can be grouped under a theme.

good first issueIssue should be easy to implement, good for first-time contributorsIssue should be easy to implement, good for first-time contributors

priority-2Work that is important, but not critical for the releaseWork that is important, but not critical for the release

test-enhancementImprovements of test source codeImprovements of test source code

Status: Closed (completed).

#721 In dotnet/winforms;

· by JuditRose was closed on Jul 31, 2024

Testing WinForms VB Code Issue

🚧 work in progressWork that is current in progressWork that is current in progress

test-enhancementImprovements of test source codeImprovements of test source code

Status: Closed (completed).

#11031 In dotnet/winforms;

· by paul1956 was closed on Sep 18, 2024

Sort glyph icon should be shown in DataGridView column header cell when programmatically sorted DataGridView

🪲 bugProduct bug (most likely)Product bug (most likely)

area-controls-DataGridView

help wantedGood issue for external contributorsGood issue for external contributors

Status: Not planned (skipped).

#1063 In dotnet/winforms;

· by Olina-Zhang was closed on Apr 22, 2025

Flaky Clipboard Unit Tests

area-ClipboardIssues related to ClipboardIssues related to Clipboard

test-bugProblem in test source code (most likely)Problem in test source code (most likely)

test-enhancementImprovements of test source codeImprovements of test source code

Status: Closed (completed).

#3456 In dotnet/winforms;

· by weltkante was closed on Jul 24, 2024

Missing Control.Dispose calls in unit tests

🚧 work in progressWork that is current in progressWork that is current in progress

test-bugProblem in test source code (most likely)Problem in test source code (most likely)

Status: Closed (completed).

#3361 In dotnet/winforms;

· by weltkante was closed on Aug 8, 2024