Project not showing as checked-in to TFS in Visual Studio 2013

Question

I added a new project to a Solution Folder in VS2013. I added the project to TFS via Source Control Explorer but in VS Solution Explorer the little lock icon next to the pr

Answer 1

Looking back to basics, I discovered some of the files (such as the project file itself) had never been added to source control. I discovered this by going to Source Control Explorer, selecting one of the projects unmarked in Solution Explorer, right-clicking to get the context menu, then selecting Add Files To Source Control, then selecting the whole list presented, then clicking OK/NEXT/FINISH. That marked the unmarked project in Solution Explorer with a plus sign (+) to be added. Then again from Source Control Explorer I selected the solution and clicked Check In Pending Changes. Then I got the lock icon in Solution Explorer.