包含的 HTML 文档类型(Visual Studio 或 HTML 通用)

Is there a doctype for includes, which tells validators (at design time, my IDE VS2010) not to check an included HTML fragment (or do a lenient check instead).

I have a main page (which includes HTML parts with T4) such as options. The validator complains on the included html file, that <optgroup> cannot be on root level. This is correct, but not desired for an included file (just containing those options).

Could I give HTML a hint, not to check those things on the included file? The solution could be either specific to my IDE (VS2010) or generic (even better) as of the HTML standard.

<optgroup label="Africa">
    <option>North Africa</option>
    <option>South Africa</option>
</optgroup>
....

PS: I prefer not to disable the checks completely (I know this can be done). It is not an option.

解决方案

Do those errors persist after installing Web Standards Update for Microsoft Visual Studio 2010 SP1?

If you find it really annoying, you could always disable it completely under tools -> options -> text editor -> html -> validation