MvcContrib Grid Custom Columns (Razor).cs

@Html.Grid(Model).Columns(column => {
  column.Custom(
    @<div>
      <em>Hello there</em>
      <strong>@item.Name</strong>
    </div>
   ).Named("Custom Column");
})

MvcContrib Grid Custom Columns (WebFormViewEngine).cs

<% Html.Grid(Model).Columns(column => {
   column.For("My Custom Column").Action(x => { %>
    <div>
	<em>Hello there</em>
	<strong><%= x.Name %></strong>
    </div>
   <% });
})
.Render(); 
%>