title: Finding an index in an ObservableCollection
body: <p>This may be very simple but I have not been able to come up with a solution. </p>
  
  <p>I am have a: </p>
  
  <pre><code>ObservableCollection&lt;ProcessModel&gt; _collection = new ObservableCollection&lt;ProcessModel&gt;();
  </code></pre>
  
  <p>This collection is populated, with many ProcessModel's. </p>
  
  <p>My question is that I have an ProcessModel, which I want to find in my _collection.</p>
  
  <p>I want to do this so I am able to find the index of where the ProcessModel was in the _collection, I am really unsure how to do this.</p>
  
  <p>I want to do this because I want to get at the ProcessModel N+1 ahead of it in the ObservableCollection (_collection).</p>