So I’ve been trying to figure out haw to repeat headers in a Tablix. I don’t do a lot of SSRS stuff and the report I’ve got is moderately complex, it does a bit of an involved grouping situation with a few sub reports for details and then a Tablix to repeat individuals under each details section.
The Tablix has Repeat Column/Row Headers properties in the property pane but they are useless. During my searches I saw something about these properties being for when the report is too wide, not too long.
Anyways, at the bottom of your report designer there should be the grouping info pane. Click on the black arrow in the upper-right corner of the pane to enable “Advance Mode” Doing this shows static group items in your grouping pane for things like header rows. Find the static item that corresponds to your header row and check the property pane. There will be a “RepeatOnNewPage” property, set it to true and headers should repeat, at least they did for me.
Hint: If you can’t figure out which static grouping could be your row header, watch the report designer as you click on the different groups, it will highlight the one you just selected in the designer.