// Token: 0x06000173 RID: 371 RVA: 0x0000D008 File Offset: 0x0000B208
internal static bool CancelCalendarItem(UserContext userContext, CalendarItemBase calendarItemBase, EditCalendarItemHelper.CancelRangeType cancelRange, ExDateTime cancelFromDateTime, out InfobarMessage infobarMessage)
{
bool result = true;
infobarMessage = null;
CalendarItem calendarItem = calendarItemBase as CalendarItem;
try
{
if (calendarItem == null)
{
StoreObjectId masterStoreObjectId = CalendarUtilities.GetMasterStoreObjectId(calendarItemBase);
calendarItem = Utilities.GetItem <CalendarItem>(userContext, masterStoreObjectId, new PropertyDefinition[0]);
if (calendarItem != null)
{
calendarItem.OpenAsReadWrite();
}
}
if (cancelRange == EditCalendarItemHelper.CancelRangeType.Occurrence || cancelRange == EditCalendarItemHelper.CancelRangeType.None)
{
EditCalendarItemHelper.CancelCalendarItem(userContext, calendarItemBase);
}
else if (cancelRange == EditCalendarItemHelper.CancelRangeType.All)
{
EditCalendarItemHelper.CancelCalendarItem(userContext, calendarItem);
}
else if (cancelRange == EditCalendarItemHelper.CancelRangeType.FromDate)
{
int cancelRecurrenceCount = CalendarItemUtilities.GetCancelRecurrenceCount(calendarItem, cancelFromDateTime);
if (cancelRecurrenceCount == 0)
{
EditCalendarItemHelper.CancelCalendarItem(userContext, calendarItem);
}
else if (cancelRecurrenceCount > 0)
{
calendarItem.Recurrence = new Recurrence(calendarItem.Recurrence.Pattern, new EndDateRecurrenceRange(calendarItem.Recurrence.Range.StartDate, cancelFromDateTime.IncrementDays(-1)));
if (calendarItem.IsMeeting && calendarItem.MeetingRequestWasSent)
{
result = CalendarUtilities.SendMeetingMessages(userContext, calendarItem, true, out infobarMessage);
}
else
{
result = CalendarUtilities.SaveCalendarItem(calendarItem, userContext, out infobarMessage);
}
}
}
}
finally
{
if (calendarItem != null && calendarItem != calendarItemBase)
{
calendarItem.Dispose();
}
}
return(result);
}