Winphone没有直接删除文件夹的接口（因为文件夹不为空是删除不了的），所以要自己实现publicstaticvoidDeleteDirectoryRecursively(thisIsolatedStorageFilestorageFile,StringdirName){Stringpattern=dirName+@"\*";String[]files=storageFile.GetFileNames(pattern);foreach(varfNameinfiles){storageFile.DeleteFile(Path.Combine(dirName,fName));}String[]dirs=storageFile.GetDirectoryNames(pattern);foreach(vardNameindirs){DeleteDirectoryRecursively(storageFile,Path.Combine(dirName,dName));}storageFile.DeleteDirectory(dirName);}

http://stackoverflow.com/questions/18422331/easy-way-to-recursively-delete-directories-in-isolatedstorage-on-wp7-8