private void addTeamButton_Click(object sender, RoutedEventArgs e)
        {
            AddTeam addTeamWindow = new AddTeam();

            addTeamWindow.Owner = this;
            if (IsOpen == false)
            {
                //addTeamWindow.deleteButton.Visibility = Visibility.Collapsed;
                addTeamWindow.Show();
                addTeamWindow.Topmost = true;
                IsOpen = true;
            }
        }
        private void editTeamButton_Click(object sender, RoutedEventArgs e)
        {
            int    id                = 0;
            string name              = "";
            string establishment     = string.Empty;
            string logo              = "";
            int    teamTournament_ID = 0;

            if (teamsListBox.SelectedItems.Count == 1)
            {
                TeamName = teamsListBox.SelectedItem.ToString();

                OpenConnection();

                MySqlCommand cmd = new MySqlCommand("Select * from teams  where Team_ID = (select Team_ID from teams where Team_Name ='" + TeamName + "')", conn);

                MySqlDataReader rd = cmd.ExecuteReader();

                while (rd.Read())
                {
                    id                = rd.GetInt32(0);
                    name              = rd.GetString(1);
                    establishment     = rd.GetString(2);
                    logo              = rd.GetString(3);
                    teamTournament_ID = rd.GetInt32(4);
                }

                CloseConnection();

                AddTeam addTeamWindow = new AddTeam(GetCountryID(), CountryName, GetTournamentName(), id, name, establishment, logo, true);
                addTeamWindow.Owner = this;
                if (IsOpen == false)
                {
                    addTeamWindow.Show();
                    IsOpen = true;
                }
            }
            else
            {
                MessageBox.Show("Prosze zaznaczyć drużynę");
            }
        }