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That’s the first time I’ve heard anyone complement UWP. I thought it doesn’t support anything useful like datagridview?

Stuff like datagrid tends to live in the Windows Community Toolkit (https://github.com/windows-toolkit/WindowsCommunityToolkit) these days. Though there's apparently an effort to reimplement it natively in WinUI (https://github.com/microsoft/microsoft-ui-xaml/issues/1500)

(one difference is that the WCT is mostly C# and WinUI/the built-in controls are C++)

DataGridView had huge problems if you wanted to do anything even slightly off the beaten path. UWP forgoes opinionated controls.