Ginger Keys shows us how to keep tablix headers visible when going through a SQL Server Reporting Services report:
When scrolling through the pages of a SQL Server Reporting Services (SSRS) report, it is very useful to be able to see the column headers throughout the report. So let’s say you have successfully created an SSRS report using Visual Studio, and everything looks wonderful…except the headers on your columns disappear when you scroll down the page. You have even set the properties of your Tablix to “Keep Headers Visible While Scrolling”, but it still doesn’t work! Trying to keep the column headings visible while you scroll down the page of your SSRS report can be a frustrating endeavor. The following steps will demonstrate how to make it work.
I always thought “Keep Headers Visible While Scrolling” should have been renamed to “Don’t Do Anything About Headers But Let Me Think You Did Something So I Can Look Like I Don’t Know What I’m Talking About When I Tell Customers That The Report Headers Should Stay Visible While Scrolling” but I guess that might have been too long of a property description.