title: Exchange EWS Calendar AppointmentState
body: <p>I am using EWS against Exchange 2010 SP1. </p>
  
  <p>I am trying to retrieve a list of appointments that have been neither accepted or declined. I thought AppointmentState may be the field i was looking for, but this does not seem to be the correct field (see links), does anyone know where i can find if a appointment has been accepted or declined?
  <strong>AppointmentState</strong> 
  [http://msdn.microsoft.com/en-us/library/microsoft.exchange.webservices.data.appointment_members(v=exchg.80).aspx]
  <strong>AppointmentState Definition</strong>
  [http://msdn.microsoft.com/en-us/library/aa564700(v=exchg.140).aspx]</p>