How to page break after Specific rows (like 15 rows) in rdlc reporting.
It's so easy.Suppose My reports looks like

Enable advance mode

Add a group for page break

Define the number of rows what do you want in the group expression(In this case i want 15 rows)

Delete group column if you not need

Delete Expression from Group details

Select Group Properties and set page break attribute breakLocation as End,Disables as false and RestPageNumber as fasle.
Select Group Details Properties and Set Disable=true
Now here's the report with page break after specific row

If You want to keep Table Header in every page than click here