This answer applies to 视觉工作室2012 and visual-studio-2013, the most up to date versions at the time the question was asked and this answer was given. More recent versions have improved their handling and have other answers here. For someone using the old versions, this answer still applies.
这已经是一段时间以来,因为这是最初发布,但这里是一个解决方案文件夹,不在一个项目的替代答案。如果你只想从 Visual Studio 中查看物理文件,而不需要在解决方案资源管理器默认视图中查看它们,那么点击开关视图按钮,选择文件夹视图,即使它们不出现在解决方案资源管理器默认视图中,在解决方案根文件夹下的任何物理目录/目录也会出现在这里。
If however, you want to add a folder tree that isn't too large as a virtual solution directory/directories to match your existing tree structure, do that and and then "add the existing" physical files to the virtual directory/directories. If the physical directory exists in your solution directory it will not copy the files - it will link directly to the physical files but they will appear as part of the solution virtual directories.