c# - How to delete a appoiment from device calendar in windows phone8.1 -

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when trying delete event device calender through application showing error

error message:

an exception of type 'system.unauthorizedaccessexception' occurred in mscorlib.ni.dll not handled in user code  additional information: access denied. (exception hresult: 0x80070005 (e_accessdenied))

please @ below code iam using delete operation

 appointmentstore appointmentstore = await appointmentmanager.requeststoreasync(appointmentstoreaccesstype.appcalendarsreadwrite);          appointmentcalendar syscal = await appointmentstore.getappointmentcalendarasync(dcalendarid);           await syscal.deleteappointmentasync(dcalendareventid);

anyone have idea please me.thank you

do have permissions use calendar? id_cap_appointments in application manifest file wmappmanifest.xml.


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