exchangewebservices - Get calendaritem from Outlook -> there is an exception -

i exception

unhandled exception of type 'microsoft.exchange.webservices.data.servicelocalexception' occurred in microsoft.exchange.webservices.dll additional information: url property on exchangeservice object must set.

on:

..., new propertyset());.  

in

public void getews()         {             // initialize values start , end times, , number of appointments retrieve.              //$service = new-object microsoft.exchange.webservices.data.exchangeservice([microsoft.exchange.webservices.data.exchangeversion]::exchange2013)             exchangeservice service = new exchangeservice(exchangeversion.exchange2013);             datetime startdate = datetime.now;             datetime enddate = startdate.adddays(30);             const int num_appts = 5;               // initialize calendar folder object folder id.              calendarfolder calendar = calendarfolder.bind(service, wellknownfoldername.calendar, new propertyset());              // set start , end time , number of appointments retrieve.             calendarview cview = new calendarview(startdate, enddate, num_appts);              // limit properties returned appointment's subject, start time, , end time.             cview.propertyset = new propertyset(appointmentschema.subject, appointmentschema.start, appointmentschema.end);              // retrieve collection of appointments using calendar view.             finditemsresults<appointment> appointments = calendar.findappointments(cview);              console.writeline("\nthe first " + num_appts + " appointments on calendar " + startdate.date.toshortdatestring() +                               " " + enddate.date.toshortdatestring() + " are: \n");              foreach (appointment in appointments)             {                 console.write("subject: " + a.subject.tostring() + " ");                 console.write("start: " + a.start.tostring() + " ");                 console.write("end: " + a.end.tostring());                 console.writeline();             }          } 

in code haven't set url ews use (which error telling you) , haven't set credentials use. see https://msdn.microsoft.com/en-us/library/office/dn509511%28v=exchg.150%29.aspx , https://msdn.microsoft.com/en-us/library/office/dn467891(v=exchg.150).aspx

cheers glen