HTML.DropDownListFor class assignment

问题

Is it possible to assign my own class to the HTML.DropDownListFor() helper?

回答1:

One of the overloaded method has an object htmlAttributes as last parameter in which you can specify extra attributes to be added to the generated html:

Html.DropDownListFor(..., new { "class" = "myclassname" };

http://msdn.microsoft.com/library/ee703670.aspx

回答2:

Didier's answer is mostly correct, but to define a class value in htmlAttributes object, you need to use this syntax:

Html.DropDownListFor(..., new { @class = "myclassname" } );

The "@" is to let the compiler know that this is not the keyword "class". Using "class" will result in a compilation error.

回答3:

You can use any of the below logic.

@Html.DropDownList("CourseId", new List<SelectListItem>(), new {@class="myclassname"} )

OR

@Html.DropDownList("CourseId", (IEnumerable<SelectListItem>)ViewBag.CourseId, new { @class="myclassname" })

OR

@Html.DropDownListFor(x => x.CourseId, (IEnumerable<SelectListItem>)ViewBag.CourseId, new { @class = "myclassname" })

来源：https://stackoverflow.com/questions/7970701/html-dropdownlistfor-class-assignment