title: Finding index from Select query in Linq
body: <p>I'm trying to find the <code>index</code> at which the difference between two properties in a <code>List&lt;&gt;</code> is <code>max</code>? Currently, I'm finding the <code>max</code> using this <code>LINQ</code> query below:</p>
  
  <pre><code>var result = link.Select(x =&gt; Math.Abs(x.Prop1 - x.Prop2)).Max();
  </code></pre>
  
  <p>How can I get the index ?</p>