The Open File in Solution window shows one entry for each file for each project that references the file. This results in duplicate entries for the file if the same file is in many projects.
the setup: create a (C++) solution with two projects add an existing file to both projects Open the open file in solution dialog and start typing the file's name
result: The file will be listed twice, the only difference in the two entries being the "project" field
This is bad because if there is a set of files that have similar names that are shared between two projects, the file list is effectively doubled when looking for those files.
Just right click on the file list in the Open File in Solution dialog and select "Combine duplicate file entries" from the menu. It is a checkbox and will remember your setting next time you open this dialog again. Hope this helps.
Well, that's pretty awesome! The context menu is pretty non-discoverable though. Why not put that checkbox at the bottom - there's already a checkbox there! Because of that, I figured there weren't any more options for the window.
I'd also suggest "combine duplicate file entries" to be turned on by default.