private void buttonShowAllStadiums_Click(object sender, EventArgs e)
 {
     Stadium.ShowAllStadiums(_sqlConnection, dataGridViewFootballStatistics);
 }
 private void buttonShowWithSurface_Click(object sender, EventArgs e)
 {
     Stadium.ShowStadiumsWithSelectedSurface(_sqlConnection, dataGridViewFootballStatistics, comboBoxSurface.Text);
 }
 private void buttonSortBy_Click(object sender, EventArgs e)
 {
     Stadium.SortBy(_sqlConnection, dataGridViewFootballStatistics, comboBoxSortBy.Text);
 }
 private void buttonSearchByCapacity_Click(object sender, EventArgs e)
 {
     Stadium.SearchByCapacity(_sqlConnection, dataGridViewFootballStatistics, textBoxStadiumFrom.Text, textBoxStadiumTo.Text);
 }