The Overflow Placeholder control (available only in a Page report) is a rectangular placeholder for data that does not fit inside the fixed size of a List, Banded List, Tablix, or Table data region. In this case, you can link a data region to an Overflow Placeholder; the control gets its Size property values from the FixedSize of the data region it is linked with. So, data that overflows the fixed size of your tables or other data regions can span pages, but you control the layout of each page and specify where the overflow data goes with a placeholder.

You can also place multiple Overflow Placeholder controls in a report to create different looks for your data output. With multiple Overflow Placeholder controls, you should link a data region to an Overflow Placeholder control and then link that Overflow Placeholder control to another Overflow Placeholder control. Two common layouts that you can create are:

• Columnar Report Layout: Place the data region and the Overflow Placeholder on the same page of the report to create a layout that displays data in a columnar format.
• Multiple Page Layout: Place the data region on the first page of the report and Overflow Placeholder controls on subsequent pages to create a layout with overflow data on multiple pages.

  Note: If a page contains only an OverflowPlaceHolder with no data to display, the empty page does not render. However, if the page also contains any control with static data, the page renders.

  To skip rendering the page, set the ThrowIfPlaceHoldersEmpty property of the report's Page instance to True.

 In RDLX reports, a similar report is can be created by setting the number of columns in the report's Columns property.