When working in an application as complex as Visual Studio it becomes necessary to learn the shortcut keys.  Some of them are used so much that the keys get hit with no thought at all.  Then there are those few that are necessary for doing things, like efficient navigation of large projects, but are used so rarely that they are easily forgotten.  One of these is the “Sync With Active Document” (Ctrl+[, S) command.  Opens the Solution Explorer and navigates directly to the file that you are looking at.