Good approach for conditionally setting CSS class mvc

I know I can use HtmlHelpers which will access data repository and return the appropriate cl开发者_运维百科ass.

<a class="<%= Html.GetOnOffState(); %>"...

But what other approaches are there?

Write an entire actionlink helper so that instead of the following tag soup:

<a class="<%= Html.GetOnOffState(); %>"..

you would use:

<%= Html.ToggableActionLink("foo", "bar") %>