c# - EWS get appointments with reminder <= current time -

i'm trying query exchenge app appointments have set reminder current time.
i've created simple method returns 1 appointment start in nearest future:

    public appointment getmyappointments()     {         try         {             calendarfolder cfolder = calendarfolder.bind(service, wellknownfoldername.calendar);             calendarview calendarview = new calendarview(datetime.now, datetime.now.addhours(1));every appointment in 1 hour             calendarview.propertyset = new propertyset(basepropertyset.firstclassproperties, itemschema.subject, itemschema.categories);             finditemsresults<appointment> findresults = cfolder.findappointments(calendarview);              list<item> items = new list<item>();              if (findresults.items.count > 0) // prevent exception             {                 items.addrange(findresults.cast<item>());             }             else             {                 return null;             }             service.loadpropertiesforitems(items, new propertyset(basepropertyset.firstclassproperties, itemschema.subject, itemschema.categories, itemschema.body));             return findresults.items[0];         }         catch (exception e)         {             return null;         }     } 

this returns me top 1 appointment start in nearest future , active in current hour:

if plan appointment starts ad 14:00 , ends @ 14:30 method return appointment if start @ 13:01, return appointment if start in @ 14:22.

i change method return meeting have set reminder before current time , didn't start:

so if plan appointment @ 15:00 , set reminder 15 minutes , call method @ 14:45 i'll appointment.

my idea appointments in lets 8 hours, iterate on them , check if have isreminderset , check if start-reminderminutesbeforestart smaller current time.

edit - temporary solution

    public owaappointment getmyappointments(int minutes)     {         try         {             calendarfolder cfolder = calendarfolder.bind(service, wellknownfoldername.calendar);             calendarview calendarview = new calendarview(datetime.now, datetime.now.addhours(10));             calendarview.propertyset = new propertyset(basepropertyset.firstclassproperties, itemschema.subject, itemschema.categories);             finditemsresults<appointment> findresults = cfolder.findappointments(calendarview);              list<item> items = new list<item>();              if (findresults.items.count > 0)             {                 items.addrange(findresults.cast<item>());             }             else             {                 return null;             }              service.loadpropertiesforitems(items, new propertyset(basepropertyset.firstclassproperties, itemschema.subject, itemschema.categories, itemschema.body, itemschema.reminderdueby, itemschema.reminderminutesbeforestart));               var appointment = findresults.items             .where(item => item.start >= datetime.now)             .firstordefault(item => item.start.addminutes(-1*minutes) < datetime.now);              return appointment // return appointment or null         }         catch (exception e)         {             return null;         }     } 

but maybe can done ews easier?

yes, can done easier. getreminders operation ews (not ews managed api) introduced in exchange 2013. information can found here: getreminders operation. retrieve current reminders, set remindertype , endtime current time.

<?xml version="1.0" encoding="utf-8"?> <soap:envelope xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"             xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages"             xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"             xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">   <soap:header>     <t:requestserverversion version="exchange2013" />   </soap:header>   <soap:body>    <m:getreminders>       <m:endtime>2014-05-06t21:00:00z</m:endtime>       <m:remindertype>all</m:remindertype>     </m:getreminders>   </soap:body> </soap:envelope>