摘要：
更新一张表的字段到另一张表update Item set cost=b.avg_cost from Item,(select MAX(avg_cost) as avg_cost,item_id from Stock group by item_id) b where item.item_id=b.i 阅读全文
摘要：
方法一：两个for循环 aspx.cs private string id=""; protected void btn_del_Click(object sender, EventArgs e) { for (int i = 0; i < typeList.Items.Count; i++) { 阅读全文
摘要：
<script type="text/javascript"> function show() { document.getElementById("ff").setAttribute("src", "Mebmains.aspx"); } function showff() { document.g 阅读全文