title: remove html tags from string using htmlagilitypack
body: <p>I wonder how could i remove the html tags using htmlagilitypack as below ?</p>
  
  <pre><code>var htmlDoc = new HtmlDocument();
  
  htmlDoc.LoadHtml(Description);
  //markups to be removed
  var markups = new List&lt;string&gt; { "br","ol","ul","li" };
  </code></pre>
  
  <p>thanks</p>