I think a good starting point is looking at one of the market place solutions, most of which have buttons to upload files. You can copy the code from there. For example in People Planning there is a dashboard extender rule called PLP_SolutionHelper with a function called "ImportXLSXFile". This function is for files that are in Xlsx format. You would need to make sure you pass the Sharefolder address as a parameter.
Hi Afone,
Thank you for your suggestion.
I will definitely take a look to mktplace solutions that have the import data option.
Ricardo
