title: RSS deleted entries still showing in asp.net reader after deletion from Tumblr
body: <p>I've successfully created an ASP.NET RSS feed reader that I am using with Tumblr for a website. It works in that it grabs the most recent 3 posts. I have 6 posts to test and I deleted 3 but my reader is not showing the original three posts. It keeps showing the last 3 that were deleted. I have put the RSS in the browser for Tumblr and it shows correctly but my reader keeps showing the three posts that were deleted. I tried clearing cache and changing browsers but I still get the deleted posts in my feed. Here's the code I am using below:</p>
  
  <p><strong>Frontend Code:</strong></p>
  
  <pre><code>&lt;asp:GridView ID="gvRssLI" runat="server"&gt;
      &lt;Columns&gt;
          &lt;asp:TemplateField&gt;
              &lt;ItemTemplate&gt;
  
                  &lt;div&gt;
                      &lt;h3&gt;&lt;%#Eval("Title") %&gt;&lt;/h3&gt;
                  &lt;/div&gt;
                  &lt;div&gt;
                      &lt;%#Eval("PublishDate" , "{0:d}") %&gt;
                  &lt;/div&gt;
                  &lt;div&gt;&amp;nbsp&lt;/div&gt;
  
                  &lt;div align="right"&gt;
                      &lt;a href='&lt;%#Eval("Link") %&gt;' target="_blank"&gt;Read More...&lt;/a&gt;
                  &lt;/div&gt;
  
              &lt;/ItemTemplate&gt;
          &lt;/asp:TemplateField&gt;
      &lt;/Columns&gt;
  &lt;/asp:GridView&gt;
  </code></pre>
  
  <p><strong>Code-behind Code:</strong></p>
  
  <pre><code>private void PopulateRssFeed()
  {
      string rssFeedUrl = ConfigurationManager.AppSettings["RssFeedUrl"];
      List&lt;Feeds&gt; feeds = new List&lt;Feeds&gt;();
      XDocument xDoc = XDocument.Load(rssFeedUrl);
      var items = (from x in xDoc.Descendants("item").Take(3)
                   select new
                   {
                       title = x.Element("title").Value,
                       link = x.Element("link").Value,
                       pubDate = x.Element("pubDate").Value,
                   });
      if (items != null)
      {
          feeds.AddRange(items.Select(i =&gt; new Feeds
          {
              Title = i.title,
              Link = i.link,
              PublishDate = i.pubDate,
          }));
      }
  
      gvRssLI.DataSource = feeds;
      gvRssLI.AutoGenerateColumns = false;
      gvRssLI.DataBind();
  }
  </code></pre>