How do I override DisplayFor boolean?

Question

How do i create a display template so i can display a bool as Yes or No not a checkbox? Using mvc3

<%: Html.DisplayFor(model => model.SomeBoolean)%>         


        

Answer 1

you can extend HtmlHelper for bool.

and remember you must use direction YesNoExtensions namespace on razor page . rem:we can overload DisplayFor for boolean with change function sign.

public namespace SampleExtensions
{
    public static class YesNoExtensions
    {
        public static MvcHtmlString DisplayFor(this HtmlHelper html, Expression> expression, bool flag = true)
        {
            object o = expression.Compile().Invoke(html.ViewData.Model);
            if (o.GetType() == typeof(bool))
            {
                if ((bool)o)
                    return new MvcHtmlString("Yes");
                else
                    return new MvcHtmlString("No");
            }
            return DisplayFor(html, expression);
        }
    }
}

and razor page.

<%@ import namespace='SampleExtensions' %>


<%: Html.DisplayFor(model => model.SomeBoolean, true)%>

last parameter true is dummy for select right DisplayFor which has been overload by us. I hope usefull.