Telerik UI for MAUI is a set of UI components, whereas code that reads data from files is general .NET development topic (i.e. something you can do with the .NET and is not done with a UI component).
The Telerik forums and Telerik Support Ticket system are designed for getting assistance with the UI components themselves, not general development topics. To ask for help with general .NET development topics, you can search or post in the following locations:
Attached is a demo I've written for you that contains some code to help you get started. It loads simple XML into a List<Book> . You can do whatever you want from there. For example, you could add Telerik components and then use the List with a DataGrid or anything else you want.
Lance | Manager Technical Support Progress Telerik