I have problems to add a graph to a non empty pdf file.
I’ve started from the code that instantiates a Pdf object with the empty constructor, or with the FileStream of a file that is not previosly existing, and it works well:
//Create a file stream to create the PDF document
FileStream fs = new FileStream(“e:/temp/SingleSeg-d.pdf”,FileMode.Create);
//Instantiate the Pdf instance and pass the file stream object to its constructor
Pdf pdf = new Pdf(fs);
//Add a section to the PDF document
Section sec1 = pdf.Sections.Add();
//Add 1000 text paragraphs to the section
for(int i = 0; i < 1000; i++)
Text t = new Text("hello world hello world hello " + i.ToString());
//Close the Pdf. This method is used only for direct file mode
Then, I modified it so the Pdf object is instantiated from the opened filestream
of an existing pdf file. If I do that, I get an exception when the Pdf object
either invokes close() or saves(outputFileStream). Next is the code:
string inFile = “…\Example_Raw_Multipage_PDF\MOBIL-01-031-20070904.pdf”; string outFile = “WithRectangle_1.pdf”; FileStream inStream = new FileStream(inFile, FileMode.Open); FileStream outputStream = new FileStream(outFile, FileMode.Create); // —> INSTANTIATE FROM FILESTREAM OF EXISTING PDF FILE Pdf pdf1 = new Pdf(inStream); Section sec1 = pdf1.Sections.Add(); Graph graph1 = new Graph(sec1,100,100); sec1.Paragraphs.Add(graph1); Aspose.Pdf.Rectangle rect1 = new Aspose.Pdf.Rectangle(graph1,50,10,100,50); rect1.GraphInfo.FillColor = new Color(“Red”); rect1.GraphInfo.IsFilled = true; rect1.GraphInfo.FillRule = “winding”; //can be “winding” or “evenodd” Aspose.Pdf.Rectangle rect2 = new Aspose.Pdf.Rectangle(graph1, 60, 20, 50, 25); graph1.Shapes.Add(rect1); graph1.Shapes.Add(rect2); //—> I GET AN ERROR IF LAST LINE IS ANY OF THESE ONES: pdf1.Save(outputStream); //pdf1.Close();
Can I get some help?
Thanks in advance.