Difference between UserProperties and ItemProperties?

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V

VGFkd2ljaw

1. Is the UserProperties collection simply a subset of ItemProperties?

2. When you send an AppointmentItem do UserProperty objects and ItemProperty

objects get transferrred to the MeetingItem that arrives in the recipient's

inbox?
 
K

Ken Slovak - [MVP - Outlook]

1. UserProperties is a subset of ItemProperties, although you can only

add/remove UserProperties. You check that with the IsUserProperty Boolean

property. The ItemProperties collection is zero based, the count doesn't

start at 1, it starts at 0, unlike UserProperties which starts at 1.

2. Try it and see.

"Tadwick" <Tadwick> wrote in message

news:BEF651D2-BD4D-47AF-ADAE-50813F552B48@microsoft.com...
> 1. Is the UserProperties collection simply a subset of ItemProperties?

> 2. When you send an AppointmentItem do UserProperty objects and
> ItemProperty
> objects get transferrred to the MeetingItem that arrives in the
> recipient's
> inbox?
 
V

VGFkd2ljaw

Thanks, Ken
wrote:


> 1. UserProperties is a subset of ItemProperties, although you can only
> add/remove UserProperties. You check that with the IsUserProperty Boolean
> property. The ItemProperties collection is zero based, the count doesn't
> start at 1, it starts at 0, unlike UserProperties which starts at 1.

> 2. Try it and see.

> >

>

> "Tadwick" <Tadwick> wrote in message
> news:BEF651D2-BD4D-47AF-ADAE-50813F552B48@microsoft.com...
> > 1. Is the UserProperties collection simply a subset of ItemProperties?
> > 2. When you send an AppointmentItem do UserProperty objects and
> > ItemProperty
> > objects get transferrred to the MeetingItem that arrives in the
> > recipient's
> > inbox?


>
 
D

Dmitry Streblechenko

Actually UserProperties collection is really created on top of a special

blob that stores user propery definition. If a property is in the

UserProperties collection, there is guarantee that it will be actually have

a value (which is stored as a named MAPI property).

If you have a custom message class, UserProperties colelction will also

contain the custom properties associated with that form

(IMAPIFormInfo::CalcFormPropSet() on the Extended MAPI level), and, again,

it is not guaranteed that any particular property will actually be set on

the item.

Dmitry Streblechenko (MVP)

-
<kenslovak@mvps.org> wrote in message

news:e556vEu2JHA.1716@TK2MSFTNGP03.phx.gbl...
> 1. UserProperties is a subset of ItemProperties, although you can only
> add/remove UserProperties. You check that with the IsUserProperty Boolean
> property. The ItemProperties collection is zero based, the count doesn't
> start at 1, it starts at 0, unlike UserProperties which starts at 1.

> 2. Try it and see.

> >

>

> "Tadwick" <Tadwick> wrote in message
> news:BEF651D2-BD4D-47AF-ADAE-50813F552B48@microsoft.com...
> > 1. Is the UserProperties collection simply a subset of ItemProperties?
>

>> 2. When you send an AppointmentItem do UserProperty objects and
> > ItemProperty
> > objects get transferrred to the MeetingItem that arrives in the
> > recipient's
> > inbox?

>
 
V

VGFkd2ljaw

Ken,

I did try and UserProperties appear to be contained in the meeting item that

is sent to a recipient; however, the object type for retrieving

UserProperties is olMeeting when the invitation arrives and olAppointment

once the invitation has been accepted. So, it makes it a bit more difficult

to manage but it is doable.
wrote:


> 1. UserProperties is a subset of ItemProperties, although you can only
> add/remove UserProperties. You check that with the IsUserProperty Boolean
> property. The ItemProperties collection is zero based, the count doesn't
> start at 1, it starts at 0, unlike UserProperties which starts at 1.

> 2. Try it and see.

> >

>

> "Tadwick" <Tadwick> wrote in message
> news:BEF651D2-BD4D-47AF-ADAE-50813F552B48@microsoft.com...
> > 1. Is the UserProperties collection simply a subset of ItemProperties?
> > 2. When you send an AppointmentItem do UserProperty objects and
> > ItemProperty
> > objects get transferrred to the MeetingItem that arrives in the
> > recipient's
> > inbox?


>
 
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