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OpenJul 16, 2026
Due by November 1, 2026
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[API Suggestion] Introduce Modern Visual Styles for Apps targeting .NET 11+ and Win 11+ for A11Y improvements. (Was DarkMode/VisualStyles)
api-approved(4) API was approved in API review, it can be implemented(4) API was approved in API review, it can be implementedAt Risk 60-80Feature is with 60%-80% prob. delayed/at risk due to internal reprioritization/resource scarceness.Feature is with 60%-80% prob. delayed/at risk due to internal reprioritization/resource scarceness.blockingUsed by the API Review BoardUsed by the API Review BoardStatus: Open.#7641 In dotnet/winforms;Fix issue#9807 review 2nd (Replaces PR #11867) DRAFT
🚧 work in progressWork that is current in progressWork that is current in progressdraftdraft PRdraft PRStatus: Draft (not ready).Code Coverage for DownloadFile Review 1St
🚧 work in progressWork that is current in progressWork that is current in progressStatus: Open (in progress).[API Suggestion] WinForms Application Builder API Proposal
api-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationAt risk 10-30Feature is with 10%-30% prob. delayed/at risk due to internal reprioritization/resource scarceness.Feature is with 10%-30% prob. delayed/at risk due to internal reprioritization/resource scarceness.design-discussionOngoing discussion about design without consensusOngoing discussion about design without consensusepicGroups multiple user stories. Can be grouped under a theme.Groups multiple user stories. Can be grouped under a theme.Status: Open.#14082 In dotnet/winforms;Add recommendations and potentially analyzers to make TryGetData<T> APIs and drag-and-drop scenarios more trimmable
area-Analyzers/CodeFixesA Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.A Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.tenet-performanceImprove performance, flag performance regressions across core releasesImprove performance, flag performance regressions across core releasesStatus: Open.#12611 In dotnet/winforms;Please make
Control.DesiredVisibilitypublicapi-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationStatus: Open.#12641 In dotnet/winforms;Expose some Events of FolderBrowserDialog to match WindowsAPICodePack CommonOpenFileDialog
api-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationStatus: Open.ContainerControl incorrectly scales multiple times when moving from one ControlCollection to another.
💥 regression-releaseRegression from a public releaseRegression from a public releasearea-HDPIHDPI, not specific to Dpi mode of appHDPI, not specific to Dpi mode of appStatus: Open.#12851 In dotnet/winforms;- Status: Open.#12861 In dotnet/winforms;
TabControl doesn't send the name of selected tab to accessibility clients on initial focus
investigateItems we want to investigate before making a decision on an issueItems we want to investigate before making a decision on an issuetenet-accessibilityMAS violation, UIA issue; problems with accessibility standardsMAS violation, UIA issue; problems with accessibility standardsStatus: Open.Ensure typed deserialization requires exact type match from resolver
area-ClipboardIssues related to ClipboardIssues related to Clipboardarea-Serialization-BinaryFormatter-FeatureWorkFeature work under the general area of BinaryFormatter related serializationFeature work under the general area of BinaryFormatter related serializationbinaryformatter-migrationIssues related to the removal of BinaryFormatter and migrations away from itIssues related to the removal of BinaryFormatter and migrations away from itStatus: Open.#12929 In dotnet/winforms;A Suggestion - facilitate use of DirectX in custom controls
api-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationStatus: Open.Need ability to not always release mouse capture at end of
WmMouseUpfor multi-button gesturesapi-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationStatus: Open.Control.CheckForIllegalCrossThreadCalls to use Interlocked.Increment/Decrement
api-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationStatus: Open.Support for the Win11 22H2 UnifiedPrintDialog
api-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationStatus: Open.#13264 In dotnet/winforms;Move the simple test cases from ClipboardTests class to ClipboardCoreTests
area-ClipboardIssues related to ClipboardIssues related to Clipboardtest-enhancementImprovements of test source codeImprovements of test source codeStatus: Open.#13331 In dotnet/winforms;- Status: Open.#13428 In dotnet/winforms;
Create new analyzer to check for the correct usage of modal dialogs
area-Analyzers/CodeFixesA Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.A Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.Status: Open.#13429 In dotnet/winforms;Simplify GraphicsInternal optimization.
area-System.DrawingSystem.Drawing issuesSystem.Drawing issuesStatus: Open.#13604 In dotnet/winforms;[Tracking] Important manually review work for DarkMode for Preview 7
area-DarkModeIssues relating to Dark Mode featureIssues relating to Dark Mode featurepriority-2Work that is important, but not critical for the releaseWork that is important, but not critical for the releaseStatus: Open.#13605 In dotnet/winforms;Merge a series of Analyzers with the new Analyzer TestInfra
area-Analyzers/CodeFixesA Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.A Roslyn Analyzer is either needed for the context, needs to be scope extended or fixed.Status: Open.#13622 In dotnet/winforms;- Status: Open.#13659 In dotnet/winforms;
[Tracking]Update the Dark Mode docs with regards to dark mode limitations
📚 documentationOpen issue here - https://github.com/dotnet/dotnet-api-docs/issuesOpen issue here - https://github.com/dotnet/dotnet-api-docs/issuesarea-DarkModeIssues relating to Dark Mode featureIssues relating to Dark Mode featurepriority-1Work that is critical for the release, but we could probably ship withoutWork that is critical for the release, but we could probably ship withoutStatus: Open.#13722 In dotnet/winforms;Point, PointF, Size and SizeF: Unary minus operator
api-suggestion(1) Early API idea and discussion, it is NOT ready for implementation(1) Early API idea and discussion, it is NOT ready for implementationarea-System.DrawingSystem.Drawing issuesSystem.Drawing issuesStatus: Open.#11860 In dotnet/winforms;[DarkMode] TaskDialogs should respond to System: DarkMode and Application's SystemColorMode.Dark
area-DarkModeIssues relating to Dark Mode featureIssues relating to Dark Mode featureStatus: Open.#12062 In dotnet/winforms;