问题
In Visual Studio 2019 how can I remove unused usings on format document?
I have found instructions for previous versions of Visual Studio (Go to Tools > Options > Text Editor > C# > Code Style > Formatting.). I don't see that in Visual Studio 2019.
回答1:
In Visual Studio 2019 you can remove unused usings with the Code Cleanup command:
And running code cleanup also formats the document.
回答2:
CTRL + K + E Will sort and remove your unused usings.
回答3:
You can assign both functions to Ctrl + K, Ctrl + D by changing hotkeys and keyboard shortcuts
来源：https://stackoverflow.com/questions/55615136/in-visual-studio-2019-how-can-i-remove-unused-usings-on-format-document