title: convert dataset to list<double> and list<string> C#
body: <p>my data looks like this:</p>
  
  <pre><code>+=======+========+
  | year  |sales   |
  +=======+========+
  | 2008  |100000  |
  | 2009  |120040  |
  | 2010  |239000  |
  | 2011  |300900  |
  | 2012  |200900  |
  +=======+========+
  </code></pre>
  
  <p>can I convert a dataset to list of double and string? the first column of the dataset will be <code>list&lt;string&gt;</code> and the second column is <code>list&lt;double&gt;</code></p>
  
  <p>is there any solution? thanks</p>