AutoRefresh Element (RDL)
Specifies the rate, in seconds, at which a report refreshes.
The value for the AutoRefresh element must be between 0 and 2147483647. If the element or value is omitted, or if the value is zero, the page will not refresh automatically. Currently, the HTML rendering extension is the only SQL Server Reporting Services rendering extension that uses AutoRefresh. However, independent software vendors (ISVs) may develop rendering extensions that support AutoRefresh.