void thisBox_Click(object sender, EventArgs e)
        {
            Serial_Hierarchy_Form showForm = new Serial_Hierarchy_Form();
            showForm.Set_PartInfo(serialHierarchyObject, serialInfo, newspaper);
            showForm.Read_Only = read_only;
            showForm.ShowDialog();

            if (showForm.Changed)
                OnDataChanged();

            show_hierarchy_value();
        }
        void thisBox_KeyDown(object sender, KeyEventArgs e)
        {
            if ((e.KeyCode != Keys.Control) && (e.KeyCode != Keys.PrintScreen) && (e.KeyCode != Keys.Down))
            {
                Serial_Hierarchy_Form showForm = new Serial_Hierarchy_Form();
                showForm.Set_PartInfo(serialHierarchyObject, serialInfo, newspaper);
                showForm.Read_Only = read_only;
                showForm.ShowDialog();

                if (showForm.Changed)
                    OnDataChanged();

                show_hierarchy_value();
            }
        }