private void OnDeleteButtonClicked(object obj)
{
if (messageDialogService.ShowYesNoMessageBox($"Are you sure you want to delete the friend '{friend.FirstName} {friend.LastName}'",
"Delete friend") == MessageBoxResult.Yes)
{
friendDataProvider.DeleteFriend(friend.Id);
eventAggregator.GetEvent <OnDeleteFriendEvent>().Publish(friend.Id);
}
}
