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HTML Image Control

One control based on the HTML IMG element is available on the HTML tab of the Toolbox as the Image control.

HTML server controls added from the Toolbox to a page in Visual Studio are simply HTML elements with certain attributes already set. You can also create HTML elements in Source view by typing markup.

By default, HTML elements on a Web Forms page are not available to the server; they are treated as markup that is passed through to the browser. However, if you add an id attribute and the attribute runat="server", ASP.NET recognizes the element as a control on the page and you can program it with server-based code. If you convert an HTML IMG element to an ASP.NET server control, it is created as an instance of the HtmlImage class. For more information, see ASP.NET Web Server Controls Overview. For a list of these controls, see HTML Server Controls.

ASP.NET server controls that render as an IMG element are as follows:

Security noteSecurity Note

The URL that is associated with an Image server control or an HTML IMG element can be tampered with by a malicious user. For more information, see Script Exploits Overview.

See Also