Open multiple files simultaneously in paint.net directly from Visual Studio's Code Editor window and / or Solution Explorer.

If you like this free extension, please give it a review.

Similar "Open In" VS extensions can be found here.

Features

Open multiple files simultaneously in paint.net.
Within the code editor window
From solution explorer
Warning if attempting to open a large quantity of files. The quantity is configurable in Tools > Options.
Warning if attempting to open one or more file types whose extension is not typically associated with paint.net. The list of typical file extensions is configurable in Tools > Options.
Option to supress the warning message if attempting to open a file whose extension is not typically associated with paint.net.

Use Cases

The Visual Studio IDE has an outstanding and feature-rich editor for a wide range of file types, even in the free "Community" editions, which can be overridden to open a third-party application.

That said, there may be times when you wish to edit a file in an alternative editor/application without overriding the default Visual Studio editor, for example:-