When previewing the report using the Interactive layout, the renderer uses so-called soft page breaks
, where the report is optimized for screen viewing. In this mode, the tables are rendered on a single continuous page to preserve the logical report layout.
You can read about the differences between Interactive and Print layout here
However, none of the layouts supports locked/frozen headers. The headers will be printed on every page, if the ColumnsHeaderPrintInEveryPage is set to true, as you did, and also if the report viewer is in Print Preview
mode. In this case, the report will be split to pages for printing and every page will contain the table headers.
This feature is available in our Feedback & Ideas portal
and you can vote for it. In future versions of our product we consider for implementation the most demanded features, so if it has more votes, we'll move it up in our implementation list.
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Feedback Portal
and vote to affect the priority of the items