private void toolStripMenuItem1_Click(object sender, EventArgs e)
 {
     //MessageBox.Show("添加下级");
     using (添加下级产品 mForm = new 添加下级产品())
     {
         if (DialogResult.Yes == mForm.ShowDialog())
         {
             int ret = new T_ProductsTableAdapter().Insert(mForm.txtProductName.Text.Trim(), treeView1.SelectedNode.Level + 1, Convert.ToInt64(treeView1.SelectedNode.Name));
             if (ret > 0)
             {
                 MessageBox.Show("加入成功");
                 AddTree();
             }
             else
             {
                 MessageBox.Show("加入失败");
             }
         }
     }
 }
 private void 修改名称ToolStripMenuItem_Click(object sender, EventArgs e)
 {
     using (添加下级产品 mForm = new 添加下级产品())
     {
         mForm.Text = "修改产品名称";
         mForm.txtProductName.Text = treeView1.SelectedNode.Text;
         if (DialogResult.Yes == mForm.ShowDialog())
         {
             int ret = new T_ProductsTableAdapter().UpdateNameById(mForm.txtProductName.Text.Trim(), Convert.ToInt64(treeView1.SelectedNode.Name));
             if (ret > 0)
             {
                 MessageBox.Show("修改成功");
                 AddTree();
             }
             else
             {
                 MessageBox.Show("修改失败");
             }
         }
     }
 }