文件夹里突然多了这个DTAR_08E86330_4835_4B5C_9E5A_61F37AE1A077_DTAR文件夹
这里有详细讨论:
https://connect.microsoft.com/VisualStudio/feedback/details/1909707/getting-empty-folder-in-project-root-after-opening-sln-file-dtar-08e86330-4835-4b5c-9e5a-61f37ae1a077-dtar