Where are Exchange Web Services: ExtendedPropertyDefinition IDs defined?

exchange-server, exchangewebservices, web-services

Solution

Those are called Microsoft Exchange Property Tags and can be found here

Problem

In researching how to use Exchange Web Services, I see examples like this ``` Dim PR_DELETED_ON As New ExtendedPropertyDefinition(26255, MapiPropertyType.SystemTime) Dim PR_SEARCH_KEY As New ExtendedPropertyDefinition(12299, MapiPropertyType.Binary) ``` That first parameter is an int that represents the property ID. Can anyone give me a pointer to where those ID numbers are defined?

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