title: Select a Single Column from an Object Observable collection
body: <p>I am having an <code>ObservableCollection</code> having 4 columns populated at run time.</p>
  
  <pre><code>public ObservableCollection&lt;object&gt; SelectedRows;
  </code></pre>
  
  <p>I want to get an Id Column values from this collection but I am unable to get this using LINQ because at compile time i do not know that Id column is present in the collection.</p>