title: Reading Xml into DataSet
body: <p>This is my XML file:</p>
  
  <pre><code>&lt;?xml version="1.0" standalone="no" ?&gt; 
  &lt;!-- This file represents The Details of the user and the responces: --&gt; 
  &lt;Survey&gt;
    &lt;Clientdetails&gt;
      &lt;ClientName xmlns="yash" /&gt; 
      &lt;ClientCompanyName xmlns="lnt" /&gt; 
      &lt;ClientTelNo. xmlns="546" /&gt; 
      &lt;ClientMobileNo xmlns="56" /&gt; 
      &lt;ClientEMail xmlns="56" /&gt; 
    &lt;/Clientdetails&gt;
    &lt;ClientResponces&gt;
      &lt;Question1&gt;
        &lt;responce&gt;1&lt;/responce&gt; 
      &lt;/Question1&gt;
      &lt;Question2&gt;
        &lt;responce&gt;2&lt;/responce&gt; 
      &lt;/Question2&gt;
      &lt;Question3&gt;
        &lt;responce&gt;3&lt;/responce&gt; 
      &lt;/Question3&gt;
      &lt;Question4&gt;
        &lt;responce&gt;3&lt;/responce&gt; 
      &lt;/Question4&gt;
      &lt;Question5&gt;
        &lt;Question5.1&gt;
          &lt;responce&gt;3&lt;/responce&gt; 
        &lt;/Question5.1&gt;
        &lt;Question5.2&gt;
          &lt;responce&gt;3&lt;/responce&gt; 
        &lt;/Question5.2&gt;
        &lt;Question5.3&gt;
          &lt;responce&gt;2&lt;/responce&gt; 
        &lt;/Question5.3&gt;
        &lt;Question5.4&gt;
          &lt;responce&gt;3&lt;/responce&gt; 
        &lt;/Question5.4&gt;
        &lt;Question5.5&gt;
          &lt;responce&gt;3&lt;/responce&gt; 
        &lt;/Question5.5&gt;
        &lt;Question5.6&gt;
          &lt;responce&gt;3&lt;/responce&gt; 
        &lt;/Question5.6&gt;
        &lt;Question5.7&gt;
          &lt;responce&gt;3&lt;/responce&gt; 
        &lt;/Question5.7&gt;
        &lt;Question5.8&gt;
          &lt;responce&gt;2&lt;/responce&gt; 
        &lt;/Question5.8&gt;
        &lt;Question5.9&gt;
          &lt;responce&gt;1&lt;/responce&gt; 
        &lt;/Question5.9&gt;
        &lt;Question5.10&gt;
          &lt;responce&gt;2&lt;/responce&gt; 
        &lt;/Question5.10&gt;
        &lt;Question5.11&gt;
          &lt;responce&gt;0&lt;/responce&gt; 
        &lt;/Question5.11&gt;
        &lt;Question5.12&gt;
          &lt;responce&gt;0&lt;/responce&gt; 
        &lt;/Question5.12&gt;
        &lt;Question5.13&gt;
          &lt;responce&gt;0&lt;/responce&gt; 
        &lt;/Question5.13&gt;
        &lt;Question5.14&gt;
          &lt;responce&gt;0&lt;/responce&gt; 
        &lt;/Question5.14&gt;
        &lt;Question5.15&gt;
          &lt;responce&gt;0&lt;/responce&gt; 
        &lt;/Question5.15&gt;
        &lt;Question5.16&gt;
          &lt;responce&gt;0&lt;/responce&gt; 
        &lt;/Question5.16&gt;
        &lt;Question5.17&gt;
          &lt;responce&gt;0&lt;/responce&gt; 
        &lt;/Question5.17&gt;
      &lt;/Question5&gt;
    &lt;/ClientResponces&gt;
  &lt;/Survey&gt;
  </code></pre>
  
  <p>I want to read this data into a DataSet. I want just the responses given by the client, and for 5th question I want the average of its 17 sub-questions.</p>
  
  <p>For example, the DataSet should only contain this:</p>
  
  <pre><code>1
  2
  3
  3
  4
  </code></pre>
  
  <p>How to do this in C#?</p>