public static Bitmap GetPieWithText(String text, Color color, Color fontColor,Font font)

{

    int size = ;

    Bitmap bmp = new Bitmap(size, size);

    Graphics g = Graphics.FromImage(bmp);

    g.SmoothingMode = SmoothingMode.AntiAlias; //使绘图质量最高，即消除锯齿

    g.InterpolationMode = InterpolationMode.HighQualityBicubic;

    g.CompositingQuality = CompositingQuality.HighQuality;

    g.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;

    g.FillPie(new SolidBrush(color), new Rectangle(, , size-, size - ), , );

    g.SmoothingMode = SmoothingMode.Default;

    g.InterpolationMode = InterpolationMode.Default;

    g.CompositingQuality = CompositingQuality.Default;

    StringFormat stringFormat = new StringFormat();

    stringFormat.Alignment = StringAlignment.Center;

    if (text.ToString().Length == )

    {

        g.DrawString(text.ToString(), font, new SolidBrush(fontColor), new Rectangle(, , size-, size - ), stringFormat);

    }

    else

        g.DrawString(text.ToString(), font, new SolidBrush(fontColor), new Rectangle(, , size - , size - ), stringFormat);

    return bmp;

}