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//Aktives Control ermitteln
        private void tblLayoutMain_Enter(object sender, EventArgs e)
        {
            Point p = tblLayoutMain.PointToClient(Control.MousePosition);
            _activeControl = tblLayoutMain.GetChildAtPoint(p);
        }

private void btnTake_Click(object sender, EventArgs e)
        {
            TableLayoutPanelCellPosition position1 = new TableLayoutPanelCellPosition();
            position1 = tblLayoutMain.GetCellPosition(_activeControl);
            string test = position1.ToString();
            
            MessageBox.Show(test);
        }