ContactPicker.PickMultipleContactsAsync

Question

I'm trying to consume the PickMultipleContactsAsync method of the ContactPicker in VB, but am running into an issue because the return type from the PickMultipleContactsOperation's GetResults operation returns an IReadOnlyList(Of IContactInformation). IContactInformation is internal to the Contacts namespace and as such is not available to calling code. I noticed that the return type for PickSingleContactAsync is a ContactInformation which is public. Is there an issue with the PickMultipleContactsOperation, or in the metadata for this method with the current build or is there another intended means of using the PickMultipleContactsAsync than:

Dim picker As New ContactPicker
Dim contacts = Await picker.PickMultipleContactsAsync()
For Each contact in contacts
    ' Compiler error because contact is an internal/friend IContactInformation type
Next

 

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Answer 1

Hi Jim,

Thanks for pointing this out.  I'm seeing similar behavior to what you describe from .Net; however, PickMultipleContacts can be called successfully from JavaScript.  I'm not sure exactly why it's different (it may be because of stronger typing in the .Net projection).  I can't check if this is known at the moment, but will try to do so tomorrow.  You can also file this yourself via the feedback tool or connect.

--Rob 

Answer 2

Ok. I submitted it, hopefully in the right area. I didn't see a connect area for general WinRT metadata errors.

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Answer 3

What's the compiler error? If you can call the method, something like this might work:

Dim picker As New ContactPicker
Dim rawContacts As IEnumerable = Await picker.PickMultipleContactsAsync()
Dim contacts = rawContacts.Cast(Of ContactInformation)()
For Each contact in contacts
    ' ...
Next