Johan posted a timely reminder of a long-standing perennial support call generator in his post Office Automation .
Adding one more option to the list of possible workarounds – direct XML-based production/manipulation of an OOXML (or ODF, for that matter) document (Word, Excel, Powerpoint?) might get you where you need to go.
Now, to get the laundry list out of the way, here’s a quick top-of-the-head list of other technologies best kept away from your shiny new ASP.Net application:
I’m not saying any of the above don’t typically work - most of the time, whatever you’re doing might work fine (I personally wrote a bunch of charting and drawing controls years ago in ASP.Net before discovering this), but when it doesn’t, our options are limited in how we’re able to help.