Hi,
I want to know
1--when to use htmlserver control and when to use webserver controls?
2--what are the basic differences when these controls are processed on server?

thanks in advance.

sarvesh upadhyay

by default the html contorls come with runat attribute not set. ie. they cannot be accessed from the server side. However, once you set the runat="server" atttribute, both behave in the same way. Any way once they come to the client side, all is plain html

html contols are processed on the server, only when the runat atribute is set to "server"

Regards
Ganesh

One notable difference I will add to Ganesh's answer:

System.Web.UI.HtmlControls and System.Web.UI.WebControls can be manipulated similarly at the server (many similar controls share many of the same properties), however only WebControls will have the most useful events at the server. (I say "most useful" because HtmlControls do have some events but they are typically not used very much, I've never used one yet.)

-Peter

Peter is right. Mostly we dont use html controls in your application which has a runat="server" attribute. However, I use htmlInputButton in most of the pages having more than one commandbutton to make the asp button the default button. Other than that i dont use any other html contorls which are available at the server.

Regards
Ganesh