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Windows Forms is a .NET UI framework for building Windows desktop applications.

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When a control wants to automatically participate in DarkMode handling, it does so by setting the `ControlStyles.ApplyThemingImplicitly` flag first thing in the overridden property `CreateParams`. For custom control controls, which...

area-DarkMode

### Environment Microsoft Visual Studio Professional 2022 (64-bit) - Current Version 17.13.6 ### .NET version Facing this issue in both .NET80 and .NET90. ### Did this work in a previous...

area-VSDesigner

Related https://github.com/dotnet/winforms/issues/13442 ## Proposed changes Add unit test file:DataGridViewImageColumnTests.cs for public methods of the DataGridViewImageColumn.cs ###### Microsoft Reviewers: [Open in CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/dotnet/winforms/pull/13547)

area-test coverage

Related https://github.com/dotnet/winforms/issues/13442 ## Proposed changes Add unit test file:DataGridViewComboBoxColumnTest.cs for public methods of the DataGridViewComboBoxColumn.cs ###### Microsoft Reviewers: [Open in CodeFlow](https://microsoft.github.io/open-pr/?codeflow=https://github.com/dotnet/winforms/pull/13617)

waiting-review
area-test coverage

Related https://github.com/dotnet/winforms/issues/10773 ## Proposed changes Add unit test file: DesignerUtilsTests.cs for public methods & properties of the DesignerUtils.cs **Note: working on another PR for the remaining test case** ###### Microsoft...

area-test coverage

Have you abandoned the `winforms-designer-extensibility` repo? https://github.com/microsoft/winforms-designer-extensibility/issues/52 We would like some feedback and updates on the many issues.

area-VSDesigner

* .NET Core Version: 5 * Have you experienced this same bug with .NET Framework?: No, works correctly in 4.7.2 **Problem description:** form.ShowDialog(owner) with owner that is Topmost stays hidden...

priority-2
:boom: regression-release

Please start with classes with coverage **below 20%** (marked in red in the [codecov.io](https://app.codecov.io/gh/dotnet/winforms/tree/main/src%2FSystem.Windows.Forms%2FSystem%2FWindows%2FForms%2FControls), and prioritize `public` and `protected virtual` methods. **Note:** Some private classes cannot be tested - **Controls/Buttons**:...

test-enhancement

### Steps to reproduce Test sample: [DemoConsole](https://github.com/dotnet/winforms/tree/main/src/System.Windows.Forms/tests/IntegrationTests/DesignSurface/DemoConsole) in Winforms repo 1. Select ContextMenuStrip control. 2. Add a TextBox/ComboBox/Separator item 3. Select the new item **Current Behavior :** ToolStripTextBox cannot get...

area-DesignerSupport

Related https://github.com/dotnet/winforms/issues/13442 ## Proposed changes Add unit test file: DataGridVieLinkCellTests.cs for DataGridVieLinkCell.cs file.

waiting-review
area-test coverage