private void yeniTakımToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frmAddNewPlayerHelper = new frmAddNew(Teams, "Team");

            frmAddNewPlayerHelper.ShowDialog();
        }
        private void yeniKoçToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frmAddNewPlayerHelper = new frmAddNew(Coaches, "Coach");

            frmAddNewPlayerHelper.ShowDialog();
        }
        private void yeniYöneticiToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frmAddNewPlayerHelper = new frmAddNew(Managers, "Manager");

            frmAddNewPlayerHelper.ShowDialog();
        }
        private void yeniOyuncuToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var frmAddNewPlayerHelper = new frmAddNew(Players, "Player");

            frmAddNewPlayerHelper.ShowDialog();
        }