Hi Hakjun,
Greetings from Syncfusion support.
You can find the SetRules() method details from the Physical
File Service provider. Check out the below links.
https://github.com/SyncfusionExamples/ej2-aspcore-file-provider/blob/master/Controllers/FileManagerAccessController.cs#L32
Also, apply the necessary rules to include access
permissions as shown in the below code.
https://github.com/SyncfusionExamples/ej2-aspcore-file-provider/blob/master/Controllers/FileManagerAccessController.cs#L120
We have also attached sample for your further reference.
Sample : https://stackblitz.com/edit/react-uhkqmk-lknjfu?file=index.js
Physical File Provider : Attached as zip folder.
Check out the shared details and get back to us if you need
any further assistance.
Regards,
Suresh.
Attachment:
PhysicalFileProvider_7a5307c9.zip