Button Web Server Controls
Buttons in an ASP.NET Web page allow users to send a command. By default, buttons submit the page to the server and cause it to be processed along with any pending events. Web server controls include three types of buttons: a command button (control), a hyperlink-style button ( control), and a graphical button ( control). All three provide similar features, but each offers a different look.
The topics in this section describe ASP.NET button controls and how to program them.