How to set disabled in MVC htmlAttribute

Question

When using an HTML Helper, what is the best method to set an attribute based on a condition. For example

<%if (Page.User.IsInRole("administrator")) {%>
<%=Html.TextBoxFor(m => m.FirstName, new {@class='contactDetails'}%>
<%} else {%>
<%=Html.TextBoxFor(m => m.FirstName, new {@class='contactDetails', disabled = true}%>
<%}%>

There must be a better way to programmatically add just one additional KeyPair to the anonymous type? Can't use

new { .... disabled = Page.User.IsInRole("administrator") ... }

as the browser takes any disabled attribute value as making the input disabled

Answer 1

I could suggest you to use mvccontrib.FluentHtml.

You can do something like this

 <%=this.TextBox(m=>m.FirstNam ).Disabled(Page.User.IsInRole("administrator"))%>

Answer 2

It works for me as well...

<%: Html.DropDownList("SportID", (SelectList)ViewData["SportsSelectList"], "-- Select --", new { @disabled = "disabled", @readonly = "readonly" })%>

<%= Html.CheckBoxFor(model => model.IsActive, new { @disabled = "disabled", @readonly = "readonly" })%>