问题
The documentation for StorageFolder.CreateFolderAsync says: "If you try to create a subfolder in a virtual folder like a library or a file group, this method may fail". That's all, no further details.
Does anyone have some deeper knowledge or experience regarding this issue? Why/When/Under what circumstances may creation fail? And what does "fail" mean? An exception is thrown (which one)? Silent failure?
来源：https://stackoverflow.com/questions/14981071/why-when-may-storagefolder-createfolderasync-fail