I’ve just stumbled upon an odd issue with the Tablix control in SSRS 2008. I deployed a report on a server a few weeks ago and it is now reporting on enough data to make it span multiple pages. I wanted the column headings to appear on all pages, not just the first. However, when I set the RepeatColumnHeaders property on the Tablix to be true, the headings still did not appear on the next page. After a bit of playing around I enabled Advanced Mode in the Grouping Pane, and had a look at the properties for the top (Static) group in Row Groups. Under Other, there is a property called RepeatOnNewPage. Setting this to True made the column headers appear as required. OK, so that’s fine, but I can’t help but think that this a a bug in SSRS 2008, and should be fixed by MS. Looking through the RDL file itself, I can’t find anything that would cause the RepeatColumnHeaders property not to behave as expected.
The “Header should remain visible while scrolling” option does not appear to work either; I haven’t yet found a workaround for this.
In Reporting Services, formatting dates can become a headache for the developer, often due to differing regional settings on servers, development boxes etc. Therefore I’ve found it much more useful to force the report to use a particular format, rather than allow the server settings to decide for me. Previously I would have used FormatDateTime in the expression, as shown here:
Depending on the regional settings, this could return either 12/3/2008 or 3/12/2008. When designing the report, I want to know exactly what the date will look like, no matter where it is deployed. So I instead use the Format function to allow me to choose the format I require. Some examples:
=Format(Fields!DateStamp.Value, "dd-MMM-yyyy H:mm")
returns 03-Dec-2008 16:44
This method removes a lot of the issues regarding date formatting, and means there are no shocks or questions when it comes to deployment time!
Edit: Setting the Language property of the report to your locale will also ensure that dates in your report parameters will have the correct format. This is something that is often overlooked.