private void AddSimButton_Click(object sender, EventArgs e)
        {
            PositionAddForm addForm = new PositionAddForm(positionBl);

            addForm.ShowDialog();
            RefreshWhenChanged();
        }
        private void addButton_Click(object sender, EventArgs e)
        {
            PositionAddForm form = new PositionAddForm();

            form.ShowDialog();
        }