Html inside label using Html helper

Question

How can I add inline html elements inside a label with Html.Label?

Answer 1

I borrowed upon Darin's answer, and added to it. I added in capability for Html before the label text and html after the label text. I also added a bunch of overload methods and comments.

I also got some information from this post: How can I override the @Html.LabelFor template?

Hope if helps folks.

namespace System.Web.Mvc.Html
{
    public static class LabelExtensions
    {
        /// 
Creates a Label with custom Html before the label text.  Only starting Html is provided.
        /// Html to preempt the label text.
        /// MVC Html for the Label
        public static MvcHtmlString LabelFor(this HtmlHelper html, Expression> expression, Func startHtml)
        {
            return LabelFor(html, expression, startHtml, null, new RouteValueDictionary("new {}"));
        }

        /// 
Creates a Label with custom Html before the label text.  Starting Html and a single Html attribute is provided.
        /// Html to preempt the label text.
        /// A single Html attribute to include.
        /// MVC Html for the Label
        public static MvcHtmlString LabelFor(this HtmlHelper html, Expression> expression, Func startHtml, object htmlAttributes)
        {
            return LabelFor(html, expression, startHtml, null, new RouteValueDictionary(htmlAttributes));
        }

        /// 
Creates a Label with custom Html before the label text.  Starting Html and a collection of Html attributes are provided.
        /// Html to preempt the label text.
        /// A collection of Html attributes to include.
        /// MVC Html for the Label
        public static MvcHtmlString LabelFor(this HtmlHelper html, Expression> expression, Func startHtml, IDictionary htmlAttributes)
        {
            return LabelFor(html, expression, startHtml, null, htmlAttributes);
        }

        /// 
Creates a Label with custom Html before and after the label text.  Starting Html and ending Html are provided.
        /// Html to preempt the label text.
        /// Html to follow the label text.
        /// MVC Html for the Label
        public static MvcHtmlString LabelFor(this HtmlHelper html, Expression> expression, Func startHtml, Func endHtml)
        {
            return LabelFor(html, expression, startHtml, endHtml, new RouteValueDictionary("new {}"));
        }

        /// 
Creates a Label with custom Html before and after the label text.  Starting Html, ending Html, and a single Html attribute are provided.
        /// Html to preempt the label text.
        /// Html to follow the label text.
        /// A single Html attribute to include.
        /// MVC Html for the Label
        public static MvcHtmlString LabelFor(this HtmlHelper html, Expression> expression, Func startHtml, Func endHtml, object htmlAttributes)
        {
            return LabelFor(html, expression, startHtml, endHtml, new RouteValueDictionary(htmlAttributes));
        }

        /// 
Creates a Label with custom Html before and after the label text.  Starting Html, ending Html, and a collection of Html attributes are provided.
        /// Html to preempt the label text.
        /// Html to follow the label text.
        /// A collection of Html attributes to include.
        /// MVC Html for the Label
        public static MvcHtmlString LabelFor(this HtmlHelper html, Expression> expression, Func startHtml, Func endHtml, IDictionary htmlAttributes)
        {
            ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, html.ViewData);
            string htmlFieldName = ExpressionHelper.GetExpressionText(expression);

            //Use the DisplayName or PropertyName for the metadata if available.  Otherwise default to the htmlFieldName provided by the user.
            string labelText = metadata.DisplayName ?? metadata.PropertyName ?? htmlFieldName.Split('.').Last();
            if (String.IsNullOrEmpty(labelText))
            {
                return MvcHtmlString.Empty;
            }

            //Create the new label.
            TagBuilder tag = new TagBuilder("label");

            //Add the specified Html attributes
            tag.MergeAttributes(htmlAttributes);

            //Specify what property the label is tied to.
            tag.Attributes.Add("for", html.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldId(htmlFieldName));

            //Run through the various iterations of null starting or ending Html text.
            if (startHtml == null && endHtml == null) tag.InnerHtml = labelText;
            else if (startHtml != null && endHtml == null) tag.InnerHtml = string.Format("{0}{1}", startHtml(null).ToHtmlString(), labelText);
            else if (startHtml == null && endHtml != null) tag.InnerHtml = string.Format("{0}{1}", labelText, endHtml(null).ToHtmlString());
            else tag.InnerHtml = string.Format("{0}{1}{2}", startHtml(null).ToHtmlString(), labelText, endHtml(null).ToHtmlString());

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