Once Visual Studio is installed, you can navigate to the location of the DLL in File Explorer, right-click on it, and select Open with Visual Studio from the context menu.

Now that Visual Studio 2019 v16.4 has shipped, the dev team is turning to new priorities in the v16.5 preview round, including the IDE's "Find in Files" feature, which is getting a modernization ...

In the Visual Studio Code 1.94 release, Microsoft has improved the Find feature in the Explorer view to make it easier to search for files in large projects.