Can I set text box to readonly when using Html.TextBoxFor?

<%= Html.TextBoxFor(m => Model.Events.Subscribed[i].Action, new { @readonly = true })%>

Use the following:

 @Html.TextBoxFor(m => m.Whatever, new {@readonly = "readonly"})

If you want to assign a class to it you could do it the same way , by adding the @class = "" property. Hope this helps :)