AdSenseASP.NET is a library of ASP.NET 2.0 webcontrols you could use for free (freeware) to display AdSense & Google Products ads.
With AdSenseASP.NET web controls you could easyaly:
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PingBack from http://weblogs.asp.net/pleloup/archive/2007/02/18/adsense-control-for-asp-net-2-0.aspx
Actually wouldn't this violate google's TOS? You cannot generate the javascript for adsense.
It render the same code as Google provide you.
I don't think it should be an issue as the output and bechavior are the same.