public void DrawBorder (iTextSharp.text.pdf.PdfContentByte contentByte,
iTextSharp.text.Rectangle rectangle,
ICSharpCode.Reports.Core.Exporter.IBaseStyleDecorator style)
{
if ( contentByte == null) {
throw new ArgumentNullException("contentByte");
}
contentByte.SetColorStroke(style.PdfFrameColor);
contentByte.SetLineWidth(UnitConverter.FromPixel(baseline.Thickness).Point);
contentByte.MoveTo(rectangle.Left ,rectangle.Top );
contentByte.LineTo(rectangle.Left, rectangle.Top - rectangle.Height);
contentByte.LineTo(rectangle.Left + rectangle.Width, rectangle.Top - rectangle.Height);
contentByte.LineTo(rectangle.Left + rectangle.Width, rectangle.Top);
contentByte.LineTo(rectangle.Left, rectangle.Top);
contentByte.FillStroke();
contentByte.ResetRGBColorFill();
}