protected void gvItemsList_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     paneInfo.Visible = panelAttention.Visible = panelError.Visible = panelSuccess.Visible = false;
     switch (e.CommandName)
     {
     case "xiugai":
         Entity.Items item = items.GetSingleItem(int.Parse(e.CommandArgument.ToString()));
         lbItemID.Text        = e.CommandArgument.ToString();
         txtAgoraPrice.Text   = item.getAgoraPrice();
         txtMemberPrice.Text  = item.getMemberPrice();
         txtSeckillPrice.Text = item.getSeckillPrice();
         txtVipPrice.Text     = item.getVipPrice();
         break;
     }
 }