How to use NextPageRequest for Microsoft graph client drive items.

[Bharani-K]

In my one drive files and folder, one subfolder are having 450 files are exist, but I am unable to get all the 450 files. only 200 files are returning. I want to get all the files from my subfolder.

sample code:

DriveItem folder;
string expandString = "thumbnails,children($expand=thumbnails)";
folder = objGraphClient.Me.Drive.Items[folderId].Request().Expand(expandString).GetAsync().Result;

it returns the folder.children. a current page only
how to send the next page request and getting all the files.