C# HtmlHelpers How to Escape / Preserve underscores in attribute names

Question

when using HtmlHelpers in Razor code, like this:

new { data-something_something = "value" }

The underscores are converted "magically" to hyphens. But what if I need my attributes to contain underscores AND hyphens? How can I escape or otherwise preserve the underscore?

["It knows you want a hyphen rather than an underscore as underscores aren't valid in html attribute names."](http://stackoverflow.com/a/12091886/11683) — GSerg, Apr 20 '17 at 21:48
@RandikaRatnayake Underscores are only valid in data attributes, as far as I know. — Timothy Kanski, Jul 20 '18 at 20:50

haim770 · Accepted Answer · 2017-04-20T22:21:38.003

2

You can pass an IDictinoary<string, string> instead:

@Html.TextBoxFor(x => x.Prop, new Dictionary<string, string> { { "data-something_something", "value" } })

Please note that attribute names like some_attr is considered invalid HTML, but in your case data-* attributes can indeed contain underscores.

See MSDN

edited Apr 20 '17 at 22:21

answered Apr 20 '17 at 21:52

haim770

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C# HtmlHelpers How to Escape / Preserve underscores in attribute names

1 Answers1