HTML.HiddenFor value set

Question

@Html.HiddenFor(model => model.title, new { id= "natureOfVisitField", @value = '@Model.title'})

it doesen't work! how to set the value?

Answer 1

Necroing this question because I recently ran into the problem myself, when trying to add a related property to an existing entity. I just ended up making a nice extension method:

    public static MvcHtmlString HiddenFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, TProperty value)
    {
        string expressionText = ExpressionHelper.GetExpressionText(expression);
        string propertyName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(expressionText);

        return htmlHelper.Hidden(propertyName, value);
    }

Use like so:

@Html.HiddenFor(m => m.RELATED_ID, Related.Id)

Note that this has a similar signature to the built-in HiddenFor, but uses generic typing, so if Value is of type System.Object, you'll actually be invoking the one built into the framework. Not sure why you'd be editing a property of type System.Object in your views though...