LINQを使用したRSSの生成

Using db As New TestDataContext()
    Dim topics As Table(Of Topics) = db.GetTable(Of Topics)()
    Dim rss = <?xml version="1.0"?>
              <rss version="2.0">
                  <channel>
                      <title>LINQでRSS</title>
                      <link>http://www.hoge.com/</link>
                      <description>LINQでテーブルのデータよりRSSを生成するサンプル</description>
                      <language>ja-JP</language>
                      <pubDate><%= topics.Max(Function(topic As Topics) topic.CreatedDate).ToUniversalTime() %></pubDate>
                  </channel>
                  <items>
                      <%= (From topic In topics _
                          Order By topic.CreatedDate Descending _
                          Select <item>
                                     <title><%= topic.Title %></title>
                                     <link>http://www.hoge.com/topic.aspx?id=<%= topic.Id %></link>
                                     <description><%= topic.Summary %></description>
                                     <pubDate><%= topic.CreatedDate.ToUniversalTime() %></pubDate>
                                     <guid>http://www.hoge.com/topic.aspx?id=<%= topic.Id %></guid>
                                 </item>).Take(10) %>
                  </items>
              </rss>End Using