Question

I’m following the MVC Music Store tutorial, but I’ve just gotten a bit stuck with the Html Helper in part 5: Part 5.

I seem to have followed it correctly so far (please correct me if I’m wrong 🙂 )…however I am getting the following error:

‘musicStoreMVC.Helpers.HtmlHelper’:
static types cannot be used as
parameters

Here is the code from my application:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace musicStoreMVC.Helpers
{
    public static class HtmlHelper
    {
        public static string Truncate(this HtmlHelper helper, string input, int length)
        {
            if (input.Length <= length)
            {
                return input;
            }
            else
            {
                return input.Substring(0, length) + "...";
            }
        }
    }
}

If anyone can see what I’m doing wrong, or if more info is needed, I’d be grateful for the pointers!! Thanks.

Answer 1

Just rename your static HtmlHelper class to HtmlHelperExtensions.