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

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I didn't see an issue for this already (feel free to close if there is one). Looks like coverage is less than 30%. ``` @@ Coverage Diff @@ ## master...

test-enhancement

**Is your feature request related to a problem? Please describe.** `ListView.BackgroundImage` is stored into a temporary file when transferred to the native control. This puts pressure on the temp file...

api-suggestion

Refer to https://github.com/dotnet/templating/issues/3866

test-enhancement
area: templates

We have a number of collections in WinForms that are currently untyped but also attempt to disallow nulls (either in the collections themselves or in the consumers). We have an...

api-suggestion

**Is your feature request related to a problem? Please describe.** See this [Stackoverflow comment which describes the current behavior](https://stackoverflow.com/a/28055196/8731) Currently, the Control.Invoke method only propagates the innermost exception to the...

api-suggestion

It seems WinForms on .NET 5 has no built-in support for dark mode theming. I can implement a custom darkmode theme switcher that sets BackColor and ForeColor on most controls...

api-suggestion
area-Theming

`DataGridView.Sort` seems to be implemented via the quick sort algo in `DataGridViewRowCollection.RowArrayList`. I would like to be able to sort the DataGridView in a non-destructive (stable) way when changing the...

up-for-grabs
api-suggestion
area: DataGridView

Please bring the ability of themes to winforms every other platform has it but WinForms. We should be able to set the theme on startup and change it on the...

api-suggestion
area: theming

I want to raise questions about plans for adding ComWrappers support in WinForms. This make WinForms application IL trimming friendly. For me that would be big win for NativeAOT, but...

up-for-grabs
api-suggestion
area: COM
area: ILLinker/AOT