Buttons and Links
Web controls define three different types of buttons and a link control. The Button control acts as a standard summit button and performs the normal PostBack to the server. The Hyperlink control does just what you would expect: controls and manages a hyperlink to other pages. The Image Button control actually represents an input with the type image. It enables you to create a button that is graphically represented by an image. Lastly, the Link button renders as an A tag that creates a custom PostBack routine.