Playing with data and blur about Onblur

Question

Hello gurus!

I have two questions, i have been following the link below to simulate the onblur event what was used earlier in classic ASP. I cant believe it there needs to be so many lines of code to actually simulate the same event, am I on the right track or is there an easier way to get this going, I spend quite a lot of time yet i could not get the server side code working. If any of you can please help post an easier alternative that would be good.
http://www.dotnetcurry.com/ShowArticle.aspx?ID=109

Second question:
I have been playing with several data controls for the last few weeks. However, it would be great if someone could give me any site or link that has an overview of all data controls summarized (datalist, reader, set etc etc) conceptually i am aware of their power and basic properties, but wanted to get an in depth knowledge in it.

Many many thanks in advance!
a c-sharper in the making ;)