Question

Is it posible to get a contact without using class Contacts and his SearchAsync method? I proceed to explain my problem.

I have an ObservableCollection

private ObservableCollection<ContactPictureItemModel> _ContactPictures;

being ContactPictureItemModel something like this

public class ContactPictureItemModel
{
    private string _Email;
    private byte[] _Picture;
    private string _DisplayName;

    public ContactPictureItemModel(string email, byte[] picture, string displayName)
    {
        this._Email = email;
        this._Picture = picture;
        this._DisplayName = displayName;
    }

    public string Email
    {
        get { return _Email; }
        set { _Email = value; }
    }

    public byte[] Picture
    {
        get { return _Picture; }
        set { _Picture = value; }
    }

    public string DisplayName
    {
        get { return _DisplayName; }
        set { _DisplayName = value; }
    }
}

Every object in this ObservableCollection represents a contact picture that application has “cached” everytime user has picked a contact from EmailAddressChooserTask.

I need when calling this method

public ContactPictureItemModel GetContactPictureItem(string email, string displayName)
{
    ContactPictureItemModel contactPictureResult;

    foreach (ContactPictureItemModel contact in ContactPictures)
    {
        if (email.Equals(contact.Key))
        {
            contactPictureResult = contact;
            break;
        }
    }

    if (contactPictureResult == null)
    {
        //Retrieve contact using "email" parameter
    }

    return contactPictureResult;
}

and contact is not found in the ObservableCollection, to be able to get the contact using parameters “email” and “displayName” without using any async task. I need the function retrieves the ContactPictureItemModel object.

Is that possible?

Thanks!

Answer 1

It’s not possible to synchronously access a contact, since there’s no API for it.

You could create the view model in a “loading” state and then “fill it in” when the async method completes. Just make sure the model class implements INotifyPropertyChanged