Bootstrap ASP.NET MVC Switch

Helper.cs

public static MvcHtmlString SwitchFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, string trueString, string falseString)
{
    if (expression == null)
        throw new ArgumentNullException("expression");

    var body = expression.Body as MemberExpression;
    if (body == null)
        throw new ArgumentNullException("expression");

    bool truthValue = (bool)ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData).Model;

    var wrapper = new TagBuilder("div");
    wrapper.AddCssClass("btn-group");
    wrapper.AddCssClass("btn-toggle");
    wrapper.Attributes.Add(new KeyValuePair<string, string>("data-toggle", "buttons"));

    wrapper.InnerHtml += CreateSwitchInput(body.Member.Name, "true", trueString, truthValue);
    wrapper.InnerHtml += CreateSwitchInput(body.Member.Name, "false", falseString, !truthValue);

    return MvcHtmlString.Create(wrapper.ToString());
}

private static string CreateSwitchInput(string name, string value, string text, bool selected)
{
    var label = new TagBuilder("label");
    label.AddCssClass("btn");

    if (selected)
    {
        label.AddCssClass("btn-primary");
        label.AddCssClass("active");
    }
    else
    {
        label.AddCssClass("btn-default");
    }

    var input = new TagBuilder("input");
    input.Attributes.Add(new KeyValuePair<string, string>("type", "radio"));
    input.Attributes.Add(new KeyValuePair<string, string>("id", name));
    input.Attributes.Add(new KeyValuePair<string, string>("name", name));
    input.Attributes.Add(new KeyValuePair<string, string>("value", value));

    label.InnerHtml += input.ToString() + " " + text;

    return label.ToString();
}

javascript.js

function bindToggleButton(selector) {
    $(selector).click(function () {
        $(this).find('.btn').toggleClass('active');

        if ($(this).find('.btn-primary').size() > 0) {
            $(this).find('.btn').toggleClass('btn-primary');
        }

        $(this).find('.btn').toggleClass('btn-default');

    });
}