In this article I will explain how to change GridView Row Background Color on MouseOver ( Hover ) using jQuery and JavaScript in ASP.Net
In one of my previous articles I have explained Change GridView Row Color OnClick without PostBack in ASP.Net
 
HTML Markup
The HTML Markup consists of an ASP.Net GridView with two columns.
<asp:GridView ID="GridView1" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White"
    runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
        <asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150" />
    </Columns>
</asp:GridView>
 
 
Namespaces
You will need to import the following namespaces.
using System.Data;
 
 
Binding the GridView
I have made use of DataTable with some dummy values for this article.
protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("Country") });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}
 
 
Changing the GridView Row Background color when clicked using JavaScript
In the below JavaScript code snippet, I have made use of jQuery to make the job easier.  Firstly I have attached jQuery Hover event handler to the TD i.e. Cell of the GridView. When mouse is moved over some GridView Cell within a Row, using the reference of the Cell the Row of the GridView is determined.
Then the hover_row CSS class is applied to the Row to which the Cell belongs i.e. the Current Row on which the mouse was hovered, this is implemented using the closest function of jQuery which can be used to determine the closest parent here the closest TR element.
The hover_row CSS class is used to apply color to the GridView Row.
<script type="text/javascript">
    $(function () {
        $("[id*=GridView1] td").hover(function () {
            $("td", $(this).closest("tr")).addClass("hover_row");
        },function(){
            $("td", $(this).closest("tr")).removeClass("hover_row");
        });
    });
</script>
 
 
 
CSS Classes used to style the GridView
<style type="text/css">
    body
    {
        font-family: Arial;
        font-size: 10pt;
    }
    td
    {
        cursor: pointer;
    }
    .hover_row
    {
        background-color: #A1DCF2;
    }
</style>
 
Default GridView Row color

Highlight GridView Row on Mouseover ( Hover ) using jQuery and JavaScript in ASP.Net

GridView Row color on mouseover

Highlight GridView Row on Mouseover ( Hover ) using jQuery and JavaScript in ASP.Net
 
Demo
View Demo
 
Downloads