Create Custom Helpers - ASP.NET MVC

1) Create extension method

Here inside my helper class I did the following coding

using System.Web.Mvc;
...
...
public static class MyHelpers
    {
        public static MvcHtmlString Image(this HtmlHelper helper, string src, string alterText)
        {
            var builder = new TagBuilder("img");
            builder.MergeAttribute("src", src);
            builder.MergeAttribute("alt", alterText);
            return MvcHtmlString.Create(builder.ToString(TagRenderMode.SelfClosing));
        }
    }

2) Add the using directive in the View

The helper class resides within the "MvcBookReview.Infrastructure" namespace. Hence:

@using MvcBookReview.Infrastructure


3) Call the custom helper in view

<div>
    @Html.Image(@Model.ImageUrl, @Model.AlternateText)
</div>

Result: