Bar Chart One value as the max value on the chart is shown. They say it can't accept negative values unless one modifies the code. Code looks well organized.
Creating Bar Charts in ASP Short code. "All that needs to be done is to scale some images by a given a mount (Example 1) or to include a picture number of times (Example 2)." Shows bars horizontally.
Simple ASPChart Example Uses the third-party component ASPChart to save chart as a .jpg to disk and then shows the .jpg file. [Note from Bill Wilkinson: ASPChart was DISCONTINUED in April, 1999! You may find some hosting services that still have it, but you can't buy it any more.]
Also... J. Paul Schmidt, the person who collected all those, has created his own Bullschmidt Bar Chart that is available at his site. It does a lot of neat things, such are round maxima numbers, handle currency formatting, tooltip values displayed vis mouse-over, and much more. It's pure ASP and free. What more could you ask for?
Finally, not in that category of effort but maybe (??) easier to understand if you are interested in the coding, I offer my own contribution to this question that I created a couple of years ago. You can see it at this page that I "steal" from my son's web site. The ASP Charting demo linked to from that page shows making a connection to and getting data from a text database.