ASP.NET MVC Checkbox Workaround.cs

    public static class MvcHtmlHelpers
    {
        /// <summary>
        /// Renders checkbox as one input (normal Html.CheckBoxFor renders two inputs: checkbox and hidden)
        /// </summary>
        public static MvcHtmlString BasicCheckBoxFor<T>(this HtmlHelper<T> html, Expression<Func<T, bool>> expression, object htmlAttributes = null)
        {
            var tag = new TagBuilder("input");

            tag.Attributes["type"] = "checkbox";
            tag.Attributes["id"] = html.IdFor(expression).ToString();
            tag.Attributes["name"] = html.NameFor(expression).ToString();
            tag.Attributes["value"] = "false";

            // set the "checked" attribute if true
            var metadata = ModelMetadata.FromLambdaExpression(expression, html.ViewData);
            if (metadata.Model != null)
            {
                if (bool.TryParse(metadata.Model.ToString(), out var modelChecked))
                {
                    if (modelChecked)
                    {
                        tag.Attributes["checked"] = "checked";
                    }
                }
            }

            // merge custom attributes
            tag.MergeAttributes(HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes), true);

            var tagString = tag.ToString(TagRenderMode.SelfClosing);
            return MvcHtmlString.Create(tagString);
        }

    }