ASP.NET Control to HTML tag equivalent

This isn't a simple question, as it depends on which version of .NEt you're talking about and states of controls sometimes. For example, the PANEL, in 1 & 1.1 render to a TABLE while in later versions it's a DIV.

But overall (for 2/3), here goes:

• Panel - Div

• Panel -- GroupingText="###" is Fieldset, Legend

• Label - Span

• Button - Input, Type Button

• Link Button - Href with JS Postback Script

• Hyperlink - Standard HREF

• Image Button - Input, Type Image

• Textbox -- Default is Input, Type Text

• Textbox -- Mode = Password is Input, type Password

• Textbox -- Mode= Multiline is Textarea

• DropDownList - Select

• Listbox - Select

• RadioButton - Input, Radio with GroupName

• Checkbox - Input, Checkbox

• Repeater/Listview --Complex.

• Gridview - Table

• Table - Table

• File - Input, Type=File

  That's the basics. The more esoteric controls such as the LOGIN control is a table with a bunch of odds an ends within it.

Stephen's list is pretty comprehensive. I'd add the following notes to it though:

Mostly it depends on the known BrowserCaps.

A 1.x Panel will render as a div in IE6+ - however in Firefox (or other "DownStream" browsers - considered DownStream because there were no details of it in the Machine.Config by default) it will render as a single cell Table - this could be resolved by supplying updated BrowserCaps for Firefox/Opera/Safari/etc, either in the Machine.Config or Web.Configs.

Also, Control Adapters can change the output - for example the CSS Control Adapters will output styled divs for most of the tabular controls (login, registration, repeaters, etc).

Note that it was announced at TechEd/PDC that ASP.NET 4.0 will have the CSS control adapters built in by default.