title: How to get 2 columns from datatable in linq
body: <p>I currently have: </p>
  
  <pre><code>var ids = dt.AsEnumerable().Select(x =&gt; (int)x["Id"]).ToList();
  </code></pre>
  
  <p>However I also need to retreive another column, name: "level" of type int also. expecting output something like:</p>
  
  <pre><code>var&lt;int,int&gt; ids = ....
  </code></pre>