DataGrid中的高级ToolTip
DataGrid中的高级ToolTip 效果如下图所示：
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' 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();');
}
}
