从ASP.NET中的BarCode下面删除文本(C#)

private void GenerateBarCode(string codeInfo)
{
    //Settings for the Image
    string TypeFaceName = "IDAutomationHC39M";
    string imageLocation = Server.MapPath("2010.png");
    //The format of the image file
    ImageFormat format = ImageFormat.Png;
    //path of unique file name    
    string path = "D://MyProjects//RepeaterPaging//images//vijendra.png";
    //REFERENCING A FONT 
    PrivateFontCollection fnts = new PrivateFontCollection();
    fnts.AddFontFile("IDAutomationHC39M.ttf");
    FontFamily fntfam = new FontFamily(TypeFaceName);
    Font fnt = new Font(fntfam,13);
    fnts.AddFontFile("Arial.ttf");
    FontFamily fntfam2 = new FontFamily("Arial",fnts);
    //DRAWING THE IMAGE  
    Bitmap bmp = new Bitmap(960,386);           //Canvas size
    Graphics g = Graphics.FromImage(bmp);
    Bitmap orignBitmap = new Bitmap(imageLocation);
    g.Clear(Color.Transparent); //Background color
    SizeF bc = g.MeasureString(codeInfo,fnt);
    Brush br = new SolidBrush(Color.Black);
    g.DrawImage(orignBitmap,10,8);
    g.DrawString(codeInfo,fnt,br,585,170); //Drawing the Image
    g.TextRenderingHint= 
    bmp.Save(path,format); //Saving the Image file
    bmp.Dispose(); //Releasing all resources (Image file) 
    Response.Clear();
}

alt text http://www.freeimagehosting.net/uploads/0e033f305b.png

现在我想删除条形码下面的文字.
我怎样才能做到这一点？.