Physical File System Provider
ASPxFileManager uses the physical file system provider when the ASPxFileManager.ProviderType property is set to Physical.
The physical file system provider is an instance of the FileSystemProviderBase class, which has methods to get the file and folder hierarchy, and methods to edit file manager items.
Use the FileManagerSettings.RootFolder property to specify the file manager root folder. You can use the PhysicalFileSystemProvider.RootFolderDisplayName property to specify the root folder name, which is displayed within the file manager.