DataGrid中的每一行，绑定onmouseover、onmousemove、onmouseout事件

实现原理：

     为DataGrid中的每一行，绑定onmouseover、onmousemove、onmouseout事件，使的鼠标移动到行内时，自动显示一个<div>，鼠标移出该行，就把这个<div>隐藏掉。

实现代码：
     前台：

1．   定义<div>的样式：

<style type="text/css">

.transparent { FILTER: alpha(opacity=85);

BORDER-TOP: indianred 1px solid;

BORDER-RIGHT: indianred 1px solid;

BORDER-LEFT: indianred 1px solid;

BORDER-BOTTOM: indianred 1px solid;

POSITION: absolute;

BACKGROUND-COLOR: infobackground;

DISPLAY: none  }

</style>

2．   显示和隐藏窗体的脚本：

<script language="javascript">

     //显示弹出窗体

     function Show(Country, City, Address, PostalCode, Phone, Fax)

     {
         document.getElementById("td1").innerText="国家："+Country;
         document.getElementById("td2").innerText="城市："+City;
         document.getElementById("td3").innerText="地址："+Address;
         document.getElementById("td4").innerText="邮政编码："+PostalCode;
         document.getElementById("td5").innerText="电话："+Phone;
         document.getElementById("td6").innerText="传真："+Fax;
         //获得鼠标的X轴的坐标
         x = event.clientX + document.body.scrollLeft;
         //获得鼠标的Y轴的坐标
         y = event.clientY + document.body.scrollTop + 20;
         //显示弹出窗体
         Popup.style.display="block";
         //设置窗体的X,Y轴的坐标
         Popup.style.left = x;
         Popup.style.top = y;

     }

//隐藏弹出窗体

function Hide()

     {
         //隐藏窗体
         Popup.style.display="none";

     }

</script>

3．   ToolTip窗体的代码

<div id="Popup" class="transparent" style=" Z-INDEX: 200">
     <table border="0" cellpadding="0" style="FONT-SIZE: x-small">
          <tr>
<td align="middle" bgcolor="indianred"><font color="white">联系方式</font></td>
</tr>
         <tr><td id="td1"></td></tr>
         <tr><td id="td2"></td></tr>
         <tr><td id="td3"></td></tr>
         <tr><td id="td4"></td></tr>
         <tr><td id="td5"></td></tr>
         <tr><td id="td6"></td></tr>
     </table>
</div>

     后台：

private DataTable dt;

private void Page_Load(object sender, System.EventArgs e)

{

     // Put user code to initialize the page here

     if(!IsPostBack)

     {

          SqlConnection cnn = new SqlConnection();

         cnn.ConnectionString = "data source=localhost;initial catalog=Northwind;password=;"

         +"persist security info=True;user id=sa;workstation id=APJ062;packet size=4096";

         string sqlstr = "select Top 16 CustomerID, CompanyName, ContactTitle,Country, City, Address,PostalCode,Phone,Fax from Customers";

         cnn.Open();

         SqlDataAdapter ad = new SqlDataAdapter(sqlstr,cnn);

         dt = new DataTable();

         ad.Fill(dt);

         grdCustomer.DataSource = dt;

         grdCustomer.DataBind();

     }

}

private void grdCustomer_ItemDataBound(object sender,

System.Web.UI.WebControls.DataGridItemEventArgs e)

{

     if(e.Item.ItemType == ListItemType.AlternatingItem

         || e.Item.ItemType == ListItemType.Item)

     {

e.Item.Attributes.Add("onmouseover",

"this.oldcolor=this.style.backgroundColor;this.style.backgroundColor='#C8F7FF';");

         e.Item.Attributes.Add("onmousemove",

"Show('"+dt.Rows[e.Item.ItemIndex]["country"].ToString()+"','"

                       +dt.Rows[e.Item.ItemIndex]["City"].ToString()+"','"

                       +dt.Rows[e.Item.ItemIndex]["Address"].ToString()+"','"

                       +dt.Rows[e.Item.ItemIndex]["PostalCode"].ToString()+"','"

                       +dt.Rows[e.Item.ItemIndex]["Phone"].ToString()+"','"

                       +dt.Rows[e.Item.ItemIndex]["Fax"].ToString()+"');");

         e.Item.Attributes.Add("onmouseout",

"this.style.backgroundColor=this.oldcolor;Hide();");

}

}