使用iTextSharp将图表导出为PDF时为黑色矩形

Question

I have a little problem, when i'd like export my chart to a new PDF file. After the export if I open the PDF I see the chart, but under this chart image I see a black rectangle too. I think the problem is the size, but I don't know what size need I to change.

Document PDF_dokumentum2 = new Document(iTextSharp.text.PageSize.A4, 25, 25, 50, 25);
PdfWriter writer2 = PdfWriter.GetInstance(PDF_dokumentum2, new FileStream(@"C:\Users\my\Desktop\asd.pdf", FileMode.Create));
PDF_dokumentum2.Open();
Bitmap asd = new Bitmap(650,600);
Kereslet_Chart.DrawToBitmap(asd, new System.Drawing.Rectangle(0,0,700,600));
iTextSharp.text.Image pdfImage = iTextSharp.text.Image.GetInstance(asd, System.Drawing.Imaging.ImageFormat.Jpeg);
pdfImage.ScaleToFit(600,400);
pdfImage.Alignment = 1;           
PDF_dokumentum2.Add(pdfImage);
PDF_dokumentum2.Close();

So and the result:

Tanks.

Answer 1

I solved. The Bitmap was too big.