ASP.NET MVC Calendar by extending the HtmlHelper

<%@ Page Title="Archived Posts" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" AutoEventWireup="true" CodeBehind="Archive.aspx.cs" Inherits="MvcCalendarSample.Views.Home.Archive" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
<h2>Mvc Calendar 4: with data and links and selected date</h2>
<%
    var selectedDate = DateTime.Parse(ViewData["date"].ToString());
    var allPosts = MvcCalendarSample.Models.Post.GetAllPosts();
    var datesArray = from d in allPosts
                     select new DateTime(d.CreatedAt.Ticks);
%>

<%= Html.Calendar("archiveCalendar", selectedDate, datesArray, "home", "archive") %>

<hr />

<h2>Archived posts in <%= ViewData["date"] %></h2>
<%
    var selectedPosts = ViewData["posts"] as List<MvcCalendarSample.Models.Post>;
%>
<p>Total <%= selectedPosts.Count%> posts in <%= ViewData["date"] %></p>

<% foreach (var post in selectedPosts)
   { %>
<p>[<%= post.CreatedAt %>] <a href="#"><%= post.Title %></a></p>
<%} %>
</asp:Content>