private async void SearchBarCo_OnTextChanged(object sender, TextChangedEventArgs e)
        {
            try
            {
                if (SearchBarCo.Text != "")
                {
                    LabelSearch.IsVisible = false;
                    ImageSearch.IsVisible = false;

                    await Task.Factory.StartNew(() =>
                    {
                        if (SearchBarCo.Text != "")
                        {
                            try
                            {
                                ChatContactsList.Clear();

                                ChatContactsList = SQL_Commander.GetContactSearchList(SearchBarCo.Text);
                            }
                            catch (Exception)
                            {
                            }
                        }
                    });
                }
            }
            catch (Exception)
            {
            }
        }
        private void SearchBar_OnSearchButtonPressed(object sender, EventArgs e)
        {
            try
            {
                if (SearchBarCo.Text != "")
                {
                    ChatContactsList.Clear();

                    var ss = SQL_Commander.GetContactSearchList(SearchBarCo.Text);
                    ChatContactListview.ItemsSource = ss;
                }
            }
            catch (Exception)
            {
            }
        }