Change color of Pie Chart slice from code behind in ASP.Net AJAX Pie Chart

This way

 int i = 1;
        string color = "#f89020";
        foreach (DataRow row in dt.Rows)
        {
            if (i == 1)
            {
                color = "#ff0000";
            }
            if (i == 2)
            {
                color = "#00ff00";
            }
            if (i == 3)
            {
                color = "#000011";
            }
            PieChart1.PieChartValues.Add(new AjaxControlToolkit.PieChartValue
            {
                Category = row["ShipCity"].ToString(),
                Data = Convert.ToDecimal(row["TotalOrders"]),
                PieChartValueColor = color
            });
            i++;
        }