Hi Sascha ,
Greetings from Syncfusion !!
We do not have any immediate plans to implement the PDF
Viewer control in WinUI platform due to other high priority work and commitments.At the planning stage for every release cycle, we review all
open features and identify features for implementation based on specific
parameters including product vision, technological feasibility, and customer
interest.
We will
let you know when this control has been developed.
Please find the feedback link to track the status,
https://www.syncfusion.com/feedback/26528/pdf-viewer-for-winui
Regards,
Vikram