C# Image Resize (Java recipe) by John Hurliman

ActiveState Code (http://code.activestate.com/recipes/577347/)

private static Bitmap ResizeImage(Image image, int width, int height)
{
    Bitmap result = new Bitmap(width, height);

    using (Graphics graphics = Graphics.FromImage(result))
    {
        graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
        graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
        graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
        graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;

        graphics.DrawImage(image, 0, 0, result.Width, result.Height);
    }

    return result;
}