private void takımEkleToolStripMenuItem_Click(object sender, EventArgs e)
        {
            object selected = null;

            if (lstPlayers.SelectedIndex > -1)
            {
                selected = lstPlayers.SelectedItem;
            }
            else if (lstCoaches.SelectedIndex > -1)
            {
                selected = lstCoaches.SelectedItem;
            }
            else if (lstManagers.SelectedIndex > -1)
            {
                selected = lstManagers.SelectedItem;
            }
            var frmAddHelper = new frmAdd(selected, Teams);

            frmAddHelper.ShowDialog();
        }
        private void koçEkleToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frmAddHelper = new frmAdd(lstTeams.SelectedItem, Coaches);

            frmAddHelper.ShowDialog();
        }
        private void yöneticiEkleToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frmAddHelper = new frmAdd(lstTeams.SelectedItem, Managers);

            frmAddHelper.ShowDialog();
        }