I have a couple of suggestion to improve the built-in HTML Template visualizer in next releases:

- Provide some mean of adding an header and footer section before the HTML repeater. Something you could do in the template itself with some custom token like [startBefore][endBefore] or ---- PRE   ---- AFTER or whatever

- Give some mean of checking if a field is empty/null to have some section display conditonally. Example for a query like "SELECT myName FROM myTable" have tokens in the HTML template like [ifExists:myName]....html and tokens here....[endifExists:myName] and of course the opposite [ifNotExists:myName].....[endifNotExists:myName]

Two little addons to the HTML visualizer which would make a big difference imo.

In the meanwhile is there any resource on how to build a custom visualizer or to extend the provide HTML one to include those functionalities? 

Thanks in advance

I would be glad to take on the project... I have to start module development sooner or later and this could be a good benchmark. The problem in those days/months I'm really under pressure with jobs to complete, that's why I was trying to delay that "module dev" phase... but maybe I'm forced to.

I'm writing the code addition to the default HTML visualizer to support header/footer and conditional token in the template.
I'm testing in a stand-alone project but the code is straightforward. Will anyone be willing/able to place that code in the Visualizer.ascx.vb file once done and recompile the reports module with that integration?
I really don't have time to learn that part and maybe this will be useful to the whole community