Question

I’m using EWS to bind to a specific message in my mailbox on Exchange. All was going fine until I added an extended property to my request. How do I set this ‘FieldURI’ property? (which none of the objects involved seem to have!)

                Dim expCP = New ExtendedPropertyDefinition(DefaultExtendedPropertySet.Common, "My Custom Prop Name", MapiPropertyType.String)
                prpPropsToLoadUpdateMessages.Add(ItemSchema.ExtendedProperties)
                prpPropsToLoadUpdateMessages.Add(expCP)
                Dim itmMessage As Item = Item.Bind(ews, New ItemId(strUniqueId), prpPropsToLoadUpdateMessages)

The 4th line of this snippet throws the error. I haven’t included the code I used to define prpPropsToLoadUpdateMessages because it’s about 100 lines of adding almost every property in ItemSchema.

TIA,
Dave

Answer 1

I found the solution at http://social.technet.microsoft.com/Forums/en/exchangesvrdevelopment/thread/207be791-0ae7-4fd1-b9a8-90e83249b9f8.

The problem was I was using DefaultExtendedPropertySet.Common when it should have been DefaultExtendedPropertySet.PublicStrings