From : http://www.codegod.de/WebAppCodeGod/Mouseover-Effect-Hover-for-ASP-NET-GridView-with-CSS-AID476.aspx
We add a CSS-file to our project with a single CSS-class called MyGridView which only contains the font-settings:
.MyGridView { font-family: Arial; font-size: 12px; }
The next thng we have to define is a CSS-class for a GridView-row. Such a row is internally represented by an HTML TR-tag. So we have to define the class like that for the normal row and the row when hovered:
.MyGridView tr.row { color: #000000; background-color: #FFFFFF; }
.MyGridView tr.row:hover { background-image: url('../img/GridViewBG.jpg'); background-repeat: repeat-x; color: #333333; }
For the hovering-effect we created a small image named GridViewBG.jpg which has a size of 2px x 30px. It is the green gradient you can see when the mousepoiner is over a row.
After that, we a add the CSS-file to the ASP.NET-form. Here is the form's full markup-code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
<link href="css/GridViewStyles.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BorderWidth="0px" CellPadding="8" CssClass="MyGridView" Width="400px" OnRowCreated="GridView1_RowCreated">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name">
<HeaderStyle HorizontalAlign="Left" />
</asp:BoundField>
<asp:BoundField DataField="Firstname" HeaderText="Firstname">
<HeaderStyle HorizontalAlign="Left" />
</asp:BoundField>
</Columns>
<HeaderStyle BackColor="Green" Font-Bold="True" ForeColor="White" />
</asp:GridView>
</div>
</form>
</body>
</html>
As you can see, we defined two columns to display data for persons. The CSS-class for the GridView is assigned by the property CssClass="MyGridView". But assigning this is not enough because the class for a GridView's row has also to be assigned. We use the GridView's event RowCreated for this task:
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
// Set the CSS-class "row" for normal grid-rows
if (e.Row.RowType == DataControlRowType.DataRow)
e.Row.CssClass = "row";
}
(3) Display data
Now the only thing left to do is to fill the GridView with some sample data so that we can see the mouseover-effect in action. Here is our DataSourceProvider-class that generates some data for us:
public class DataSourceProvider
{
public static DataTable GetPersons()
{
DataTable result = new DataTable();
result.Columns.Add("Name");
result.Columns.Add("Firstname");
AddPerson(result, "Matthias", "Pieroth");
AddPerson(result, "Mark", "Twain");
AddPerson(result, "Charles", "Bukowski");
AddPerson(result, "Francois", "Villon");
return result;
}
private static void AddPerson(DataTable table, string firstName, string name)
{
DataRow row = table.NewRow();
row["Name"] = name;
row["Firstname"] = firstName;
table.Rows.Add(row);
}
}
The binding of these data is done in the form's Page_Load-event
protected void Page_Load(object sender, EventArgs e)
{
GridView1.DataSource = DataSourceProvider.GetPersons();
GridView1.DataBind();
}