private void btnSave_Click(object sender, EventArgs e)
        {
            if (SelectedItem != null)
            {
                int         ID_LINQ     = SelectedItem.GetID();
                Competition competition = Access.Select <Competition>().Where(a => a.CompetitionID == ID_LINQ).First();

                competition.CompetitionName        = tbName.Text;
                competition.CompetitionStartDate   = dpStart.Value;
                competition.CompetitionEndDate     = dpEnd.Value;
                competition.CompetitionDescription = tbDetails.Text;

                competition.Edit();

                MessageBox.Show("Update with success!", "Success");

                LoadInfo();
            }
        }