C#

using (Graphics G = Graphics.FromImage(Chart))
{
    using (Pen P = new Pen(Color.LightSlateGray))
    {
        using (SolidBrush B = new SolidBrush(Color.Black))
        {
            using (Font F = new Font(new FontFamily("Arial"), 9f, FontStyle.Regular))
            {
                G.DrawString((ScaleBaseY + LineCount).ToString(), F, B, (float)(UsableSizeX + 2), (float)Y);
            }
        }
     }
}

double result = 0;
for (double d = 1; d <= 3d; d += 0.25d)
{
    result += Math.Round(d);
}