"Collection initialization can be simplified" in code cleanup #82549
Description
This issue has been moved from a ticket on Developer Community.
Hi,
When a collection expression can be simplified (ex.: MyObject[] MyObject = new MyObject [] { }), the editor dims "new MyObject [] { }", and "show potential fixes" suggests "Use collection expression". When this command is called manually, "new MyObject [] { }" becomes "[]".
I would like to have it done automatically when i call Code Cleanup, on the active file, but I did not find so far what categories should be activated.
"Fix all warning and errors in EditorConfig" works, but it implies that "dotnet_style_prefer_collection_expression" is explicitly set at "warning" in .editorconfig, while other categories are handled by code cleanup even if they are only "suggestion"
(By the way, there are so many categories and combinations of preferences, that it would help much to be able to navigate to the right ones directly from the suggestion in the context menu).
Regards
Original Comments
Feedback Bot on 1/19/2026, 09:39 AM:
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