How to Set RadioButtonFor() in ASp.net MVC 2 as Checked by default

Question

How can i Set RadioButtonFor() as Checked By Default

<%=Html.RadioButtonFor(m => m.Gender,\"Male\")%>

there is way out for (Html.Radio

Answer 1

This Helper evaluates the expression and if equals to the value it checks the radio button, and has the same parameters than RadioButtonFor (for this reason the name is diferent):

public static MvcHtmlString CheckedRadioButtonFor(this HtmlHelper htmlHelper, Expression> expression, object value)
{
    return CheckedRadioButtonFor(htmlHelper, expression, value, null);
}

public static MvcHtmlString CheckedRadioButtonFor(this HtmlHelper htmlHelper, Expression> expression, object value, object htmlAttributes)
{
    var func = expression.Compile();
    var attributes = new RouteValueDictionary(htmlAttributes);
    if ((object)func(htmlHelper.ViewData.Model) == value) {
        attributes["checked"] = "checked";
    }
    return htmlHelper.RadioButtonFor(expression, value, attributes);
}

Usage:

<%= Html.CheckedRadioButtonFor(m => m.Gender, "Male", new { id = "gender-male" })%>

Result: