private void 商品类别TToolStripMenuItem_Click(object sender, EventArgs e)
{
string title = getTitleFromMenuItem(sender);
logDao.saveLog(Parameter.user, title);
CategoryFrm cateFrm = new CategoryFrm();
cateFrm.MdiParent = this;
cateFrm.setTable("categoryOfProduct");
cateFrm.Text = title;
cateFrm.Show();
}