Data Refresh UI control

Improving the refresh experience from UI

It maybe look a small thing, but

- when I build an analytics application designed to be consumed from the web,
- and when the analysis includes several data sources, that need to be refreshed by the end user (pressing a button) while keeping your markings etc. 

then...

- I always find a bit complicated to have to include a control and write manually all those scrips like x.Refresh() where x has to be defined as Datatable() 

- Also from a realestate perspective, I never know where to place it and it always takes to much space.

- I would love to have a refresh control that would be easier to use and look better on my page. configuration could consist of selecting what data sources to refresh and then having all visualisations that use any of them to refresh automatically.