title: Combining two fields in a selectlist with one field being a related record
body: <p>I have a Title table and a Member table, the relationship works fine between them both. I want to be able to join the text of the two fields in another controller.</p>
  
  <p><strong>Member model class</strong></p>
  
  <pre><code>public string LastName { get; set; }
  public Title Title { get; set; }
  public string FullName =&gt; string.Format("{0} {1}", Title.TitleName, LastName); 
  </code></pre>
  
  <p><strong>Title model class</strong></p>
  
  <pre><code>public int ID { get; set; }
  public string TitleName { get; set; }
  public ICollection&lt;Member&gt; Member { get; set; }
  </code></pre>
  
  <p><strong>Selectlist section in controller</strong></p>
  
  <pre><code>ViewData["MemberID"] = new SelectList(_context.Members, "ID", "FullName");
  </code></pre>
  
  <p>When this is running all I'm getting is a null object for Title instead of getting the related title name of the record.</p>
  
  <p>What am I getting wrong in this understanding?</p>