Button
The Button control presents a standard command button, which is rendered as an HTML input element. Using a Button control on ASP.NET web pages allows users to indicate that they have completed the form or that they want to perform a specific command. Web server controls include three kinds of buttons, each of which appears differently on web pages: Button control, LinkButton, and ImageButton.
When a user clicks any of the three types of buttons, a form is submitted to the server. This causes the web page to be processed and any pending events to be raised in server-based code. For details about writing code for button controls, see Button Web Server Controls Overview 
in the MSDN library.
To add a Button control to a page
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Drag the Button control from the Toolbox panel to your page.
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Set properties for the control in the Tag Properties panel.
For more information about Button control tag properties, see Button Members in the MSDN library.
