I use epplus to download .xlsx files using response object, after the save dialog appears my UI gets disturbed, styles are not applied. I am using .ashx to download data as .xlsx file. In the download button click event i am dynamically creating iframe and setting its style to display none and an src to run the .ashx file where in package.getasbytearray is sent to response object.I even have modal popup opened during this process. I use to hide it before I set src to iframe. My problem is that the styles are not applied to controls , so that they were invisible after the response is sent to browser. There's no code after response.close(), just a finally block executes.
any suggestion is appreciated.