asp.net

[Peeyush]

hi friends,
how are you all,
I have a very basic Question.

How the controls are made in asp.net.I tried to make some controls from scratch, by inheriting control class, But could not have the user interface, as desired.
Can servercontrols with attractive userinterface(like toolbar)can be made in asp.net, or how can i make my own controls like this.

I am urgently needing it.
If possible , also write me about the sites & books where i can get information about it.

Thanks in advance for your support
with regards
Peeyush