How do I know a recurrence task is end by occurrences or end by date?

Question

I am using VB.NET and trying to retrieve the Outlook events and Tasks from Outlook client.

I can get the task/event recurrence pattern, eg:

 Dim pattern As Outlook.RecurrencePattern = task.GetRecurrencePattern()

pattern.Occurrences

pattern.PatternEndDate

 

However, how do I know if the recurrence task or event is end by occurrences? or end by specific end date?

It's because I may need to update the task recurrence pattern, but I don't know which one I should update.

I couldn't find any properties in the Outlook.RecurrencePatternto get this?

Appreciate if someone can give me some pointer.

Thanks.

cowcow

Answer 1

Outlook Object Model does not expose that information.

You can either read the the recurrence blob using PropertyAccessor and parse it (it's format is documented at http://msdn.microsoft.com/en-us/library/ee201188(v=exchg.80).aspx) or you can use RDORecurrencePattern.PatternEndKind property in Redemption: http://www.dimastr.com/redemption/RDORecurrencePattern.htm

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Dmitry Streblechenko (MVP)
http://www.dimastr.com/redemption Redemption - what the Outlook Object Model should have been Version 5.2 is now available!

Answer 2

Thank you for the infomration.

 

Using the Outlook Spy, IMessage - Outlook Task,  I could see the TaskRecurrence property
http://schemas.microsoft.com/mapi/id/{00062003-0000-0000-C000-000000000046}/81160102

However, when I tried to access it from VB.NET of a recurrence task, I got the error:

e.g:
propertyAccessor.GetProperty("http://schemas.microsoft.com/mapi/id/{00062003-0000-0000-C000-000000000046}/81160102")


System.Runtime.InteropServices.COMException = {"Object does not support property "http://schemas.microsoft.com/mapi/id/{00062003-0000-0000-C000-000000000046}/81160102"."}

I could access the other properties, but just not this one, andy idea?

Thanks.

Answer 3

Hmmm... It looks like Outlook prevents your from reading that property...

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Dmitry Streblechenko (MVP)
http://www.dimastr.com/redemption Redemption - what the Outlook Object Model should have been Version 5.2 is now available!

Answer 4

Or other binary properties that it knows about. Such as the time zone blobs..

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Dmitry Streblechenko (MVP)
http://www.dimastr.com/redemption Redemption - what the Outlook Object Model should have been Version 5.2 is now available!

Answer 5

The other binary properties are ok, just this one. No luck, any idea?

 

Thanks.

Answer 6

I would imagine they will fix it sooner or later.

Otherwise it is Extended MAPi in C++ or Delphi or Redemption (any language).

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Dmitry Streblechenko (MVP)
http://www.dimastr.com/redemption Redemption - what the Outlook Object Model should have been Version 5.2 is now available!

Answer 7

Thanks, I will have a look of the MAPI or Redemption.