DataGrid鼠标指向时显示不同颜色

DataGrid鼠标指向时显示不同颜色
private void DataGrid1_ItemDataBound(object sender,System.Web.UI.WebCountrols.DataGridItemEventArgs e)
{
if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
{
e.Item.Attributes.Add("onmouseover","c=this.style.backgroundColor;this.style.backgroundColor='#6699ff'");
e.Item.Attributes.Add("onmouseout","this.style.backgroundColor=c");
}
}