Update SQL Entry

Hi,

i have a question fow to enable user to update SQL Entry.

I have a Detail of users post with a button Update and this is my code behind. But nothing happens. How do i redirect back to edit of this selected post?

private void Update_Tapped(object sender, EventArgs e)
{

        var result = _adService.UpdateAdLogEntry(selectedAd);
        if (result == true)
        {
            DisplayAlert(LabelCZ.AlertSpace, LabelCZ.AlertDeleted, LabelCZ.AlertOk);
            Navigation.PushAsync(new HomePage());
        }
        else
        {
            DisplayAlert(LabelCZ.AlertSpace, LabelCZ.AlertSmtWentWorng, LabelCZ.AlertOk);
        }


    }