//新增菜式
 private void addTool_Click(object sender, EventArgs e)
 {
     MenuForm addMenu = new MenuForm(db, null, catTree.SelectedNode.Text, this);
     addMenu.ShowDialog();
 }
        //编辑菜式
        private void editGoods_Click(object sender, EventArgs e)
        {
            if (dgv.CurrentCell == null)
            {
                GeneralClass.printWarningMsg("没有选择行!");
                return;
            }

            int selId = Convert.ToInt32(dgv.CurrentRow.Cells[0].Value);
            var menu = db.Menu.FirstOrDefault(x => x.id == selId);

            MenuForm editMenu = new MenuForm(db, menu, "", this);
            if (editMenu.ShowDialog() == DialogResult.OK)
                dgv_show();
        }
        //新增菜式
        private void addTool_Click(object sender, EventArgs e)
        {
            MenuForm addMenu = new MenuForm(db, null, catTree.SelectedNode.Text, this);

            addMenu.ShowDialog();
        }