public void OpenContactMessagePage(object sender, ItemTappedEventArgs e)
{
var myListView = (ListView)sender;
PhoneContact myItem = (PhoneContact)myListView.SelectedItem;
MessagingPage messagePage = new MessagingPage(myItem);
Navigation.PushAsync(messagePage);
}
public MessagingPage(PhoneContact contact)
{
InitializeComponent();
BindingContext = new MessagingViewModel(contact);
}