private void Button_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
MemberType member = memberView.SearchMemberCollections.Where(x => x.Username == MemberAutocomplete.Text).FirstOrDefault();
BoardType board = PhoneApplicationService.Current.State["CurrentBoard"] as BoardType;
if (member != null)
{
memberView.AddNewUserToBoard(board.ID, member.ID);
}
}