We have the need to browse several million records using the xamDataGrid and intend on loading the data into memory "on demand" using a common paging model. The problem lies with the xamDataGrid only showing scrollbars that are relevant to the current number of records on the currently-loaded 'page'.

For example, we want to load 1 million records and set a page size of 1,000 records. Our dataset is populated with 1,000 rows, and xamDataGrid shows a scrollbar to navigate those 1,000 rows. But we would like the scrollbar to act like it was scrolling the full 1,000,000 rows, if the user scrolled to 50%, it would load records 500,000 to 501,000 into memory.

Is this possible? Or will we only ever see the total number of records currently in memory represented by the scrollbar?

(as a side-note, we are implementing filtering and limits on datasets so having to load 1,000,000 records is not realistic, but as an example to get the point and mechanism we need across I hope it worked).