Question

I’m not talking about javascript functions, but server side functions written in c#.

For the html table in my view, I’m creating table headers that act like sortable columns. But the sortability depends on a complex logic so I want to put the logic into a function instead of writring it for each column.

@Amr ElGarhy
Thank you for suggesting customer helper, but the helper class I create is not being regonizied.

Helper Code:

namespace MyHtmlHelpers
{
    public static class CustomHelpers
    {
        public static string MySortColumn(this HtmlHelper helper, string label, string col, string dir, UrlHelper url)
        {
            return string.Empty;
        }
    }
}

web.config:

<pages>
  <namespaces>
    <add namespace="System.Web.Helpers" />
    <add namespace="System.Web.Mvc" />
    <add namespace="System.Web.Mvc.Ajax" />
    <add namespace="System.Web.Mvc.Html" />
    <add namespace="System.Web.Routing" />
    <add namespace="System.Web.WebPages"/>
    <add namespace="MyHtmlHelpers"/>
  </namespaces>
</pages>

But in View, neither @HtmlHelper.MySortColumn nor @Html.MySortColumn is regonized. Am I missing something here? I even restarted my pc.

UPDATE
adding namespace in web.config didn’t work for me. adding in View page works.

Answer 1

I think you need to take a look at HTML Helpers and how to create a custom one:

http://www.asp.net/mvc/tutorials/creating-custom-html-helpers-cs

http://www.asp.net/mvc/videos/how-do-i-create-a-custom-html-helper-for-an-mvc-application