ASP.NET

    protected void GridView4_RowDataBound(object sender, GridViewRowEventArgs e)<br />
    {<br />
        if (e.Row.RowType == DataControlRowType.DataRow)<br />
        {<br />
            absentTotal += Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "Category"));<br />
        }<br />
        else if (e.Row.RowType == DataControlRowType.Footer)<br />
        {<br />
            e.Row.Cells[0].Text = "Total Absent:";<br />
            e.Row.Cells[3].Text = absentTotal.ToString("c");<br />
<br />
            e.Row.Font.Bold = true;<br />
        }<br />
    }