Highlight GridView Row when editing in ASP.Net

I havewrite the edit button code as  

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
    GridView1.EditIndex = e.NewEditIndex;
    BindData();
}

in bindata i am doing this

GridView1.DataSource = ta.GetData();
GridView1.DataBind();

Now i want that when i click on Edit command button of GridView then that row remain highlighted till the next edit button is clicked in anothe row.. thanks in advance...