title: EWS Managed API: Get LastModifiedTime after Update/Save
body: <p>Im syncing some contacts with Excahnge-Webservices.</p>
  
  <p>I have to know if a contact is changed on the server. for this i want to read the LastModifiedTime after an Update.</p>
  
  <p>Atm im doing this by binding the item with a special propertyset.</p>
  
  <p>but that slows down my calls.</p>
  
  <p>is there a way to read the LastModifiedTime ON Update/Save without a new bind?</p>
  
  <pre><code>// Save the contact.
  contact.Update(ConflictResolutionMode.AlwaysOverwrite);
  
  PropertySet ps = new PropertySet(BasePropertySet.IdOnly);
  ps.Add(ItemSchema.LastModifiedTime);
  contact = Contact.Bind(service, contact.Id.UniqueId, ps); // rebind the item to get the LastModifiedTime
  
  lastServerModificationDate = contact.LastModifiedTime;
  </code></pre>