Reporting Services: Tablix RepeatColumnHeaders doesn't work on some reports

Question

So I\'ve got various reports that consist of a DataSet rendered in a Tablix... pretty garden variety stuff. There is a property for the Tablix control named RepeatColumnHead

Answer 1

I found a solution that works for me. Vinny's answer led me to it.

Thankfully, I didn't have to recreate my tablix. I had three rows that made up my tablix header. I added three rows outside of the highest level group. These rows are not bound to any group. I modified the rows so that they exactly duplicated the header rows I had in my highest level group. I set the KeepWithGroup property to "After" and the "RepeatOnNewPage" property to true for each of these header rows. I tested the report. The header appeared at the top of every page but due to the duplication of the header rows both inside the highest level group and above the highest level group, the header repeated twice at the top of the first page and at every section break. I deleted the header rows in the topmost section and the duplication went away. Headers repeat correctly at the each break of the highest level group and at the top of each page. There are no header rows in the highest level group.

To set KeepWithGroup and RepeatOnNewPage: Select the tablix. In the group box below the design pane, click on the down arrow to the right of the text that reads "Column Groups" and make sure "Advanced Mode" is checked. Click the first static row and set the KeepWithGroup property to "After" and "RepeatOnNewPage" to true. Do that for each of the rows that comprise your header.