web页面，给控件添加鼠标悬浮事件，显示一个div，

肯定得用ajax异步获取了 jquery做起来比较简单 我用的是ul li span来显示的数据
$(document).ready(function(){
$(".orderClass").click(function(){
var orderId=$(this).text();
$.ajax({
type:"post",
url:"ShowOrderDetails.aspx?orderId="+orderId,//转向一个后台处理页面
success:function(msg){ //ajax成功时候的处理
var objs=msg.split(";");
$(".divClass:eq("+index+")").html("

• 商品名称</span>购买数量</span>商品单价</span>所属商铺</span></li></ul>").hide();
  for(var i=0;i {
  var objArray=objs[i].split(",");
  var name=objArray[0];
  var number=objArray[1];
  var price=objArray[2];
  var shopName=objArray[3];
  var pid=objArray[4];
  $(".divClass").hide();
  $(".divClass:eq("+index+")").append("
• "+name+"</a></span>"+
  number+"</span>"+price+"</span>"+shopName+"</span></li>").show(500);
  }
  },
  error:function(msg)
  {
  
  }
  });
  });
  ShowOrderDetails.aspx.cs 处理JS的后台代码
  Tb_TgOrderDetailsBLL orderDetails = new Tb_TgOrderDetailsBLL();
  Tb_TgShopBLL shop = new Tb_TgShopBLL();
  protected void Page_Load(object sender, EventArgs e)
  {
  if (Request.QueryString["orderId"] == null)
  {
  Response.Write("");
  Response.End();
  }
  string orderId = Request.QueryString["orderId"];
  StringBuilder builder = new StringBuilder("");
  foreach (DataRow row in orderDetails.GetDetailsByOderId(orderId).Rows)
  {
  string productName = row["p_name"].ToString(); //商品名称
  string number = row["details_number"].ToString(); //购买数量
  string price = row["p_price"].ToString(); //团购价格
  string shopId = row["p_shop_id"].ToString();
  string pid=row["p_id"].ToString();
  string shopName = shop.GetShopById(shopId)["shop_name"].ToString(); //所属商铺
  builder.AppendFormat("{0},{1},{2},{3},{4};", productName, number, price, shopName, pid);
  }
  Response.Write(builder.ToString());
  Response.End();