title: remove only some html tags on c#
body: <p>I have a string:</p>
  <pre><code>string hmtl = &quot;&lt;DIV&gt;&lt;B&gt; xpto &lt;/B&gt;&lt;/DIV&gt;
  </code></pre>
  <p>and need to remove the tags of  <code>&lt;div&gt;</code> and <code>&lt;/DIV&gt;</code>. With a result of : <code>&lt;B&gt; xpto &lt;/B&gt;</code></p>
  <hr />
  <p>Just <code>&lt;DIV&gt; and &lt;/DIV&gt;</code> without the removal of a lot of html tags, but save the <code>&lt;B&gt; xpto &lt;/B&gt;</code>.</p>