private void 新增ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frm_Production_Add fva1 = new frm_Production_Add();

            if (fva1.ShowDialog() == System.Windows.Forms.DialogResult.Yes)
            {
                frm_Production_Display_Load(null, null);
            }
        }
 /// <summary>
 /// 商品管理子系统。包含新增商品、修改商品、删除商品、查看商品列表;
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void 新增商品ToolStripMenuItem_Click(object sender, EventArgs e)
 {
     frm_Production_Add fpa    = new frm_Production_Add();
     DialogResult       result = fpa.ShowDialog();
 }