Hi Bui duc Anh,
Thanks for contacting Syncfusion support.
In the latest EJ2 version (v18.2.44), we have introduced option to prevent default sorting (Ascending) in File Manager.
By setting the sortOrder as None (Indicates that the folders and files are not sorted), we can prevent the default sorting in FileManager.
Please, check the following sample for sortOrder as none
This feature not provides option to set sortOrder by date modified, name and such fields. We suggest you use our previously shared solution to meet your expected requirement.
Please, let us know if you need any further assistance.
Regards,
Shameer Ali Baig S.