private void AddButton_Click(object sender, EventArgs e)
        {
            /*SQLiteConnection connection = Utils.getConnection();
             * String sql = "INSERT INTO Klub (Nazwa, DataZgloszenia, OsobaZglaszajaca) VALUES ('Abc','2015-02-27','Akukuku!')";
             * SQLiteCommand command2 = new SQLiteCommand(sql, connection);
             * command2.ExecuteNonQuery();*/
            AddClubForm acf = new AddClubForm(null, "", "", "");

            acf.ShowDialog();
            if (acf.NewAdded)
            {
                UpdateDataTable();
                UpdateDataTableWithFilter();
            }
        }
        private void EditButton_Click(object sender, EventArgs e)
        {
            if (dataGridView1.SelectedRows.Count > 0)
            {
                DataGridViewRow row    = this.dataGridView1.SelectedRows[0];
                String          id     = row.Cells[0].Value.ToString();
                String          name   = row.Cells[1].Value.ToString();
                String          date   = row.Cells[2].Value.ToString();
                String          person = row.Cells[3].Value.ToString();


                AddClubForm acf = new AddClubForm(id, name, date, person);

                acf.ShowDialog();
                if (acf.NewAdded)
                {
                    UpdateDataTable();
                    UpdateDataTableWithFilter();
                }
            }
        }