Пример #1
0
    static void Main(string[] args)
    {
        // If using Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY");

        PdfDocument document = PdfDocument.Load("Reading.pdf");

        // Get document's trailer dictionary.
        var trailer = document.GetDictionary();
        // Get document catalog dictionary from the trailer.
        var catalog = (PdfDictionary)((PdfIndirectObject)trailer[PdfName.Create("Root")]).Value;

        // Either retrieve "PieceInfo" entry value from document catalog or create a page-piece dictionary and set it to document catalog under "PieceInfo" entry.
        PdfDictionary pieceInfo;
        var           pieceInfoKey   = PdfName.Create("PieceInfo");
        var           pieceInfoValue = catalog[pieceInfoKey];

        switch (pieceInfoValue.ObjectType)
        {
        case PdfBasicObjectType.Dictionary:
            pieceInfo = (PdfDictionary)pieceInfoValue;
            break;

        case PdfBasicObjectType.IndirectObject:
            pieceInfo = (PdfDictionary)((PdfIndirectObject)pieceInfoValue).Value;
            break;

        case PdfBasicObjectType.Null:
            pieceInfo             = PdfDictionary.Create();
            catalog[pieceInfoKey] = PdfIndirectObject.Create(pieceInfo);
            break;

        default:
            throw new InvalidOperationException("PieceInfo entry must be dictionary.");
        }

        // Create page-piece data dictionary for "GemBox.Pdf" conforming product and set it to page-piece dictionary.
        var data = PdfDictionary.Create();

        pieceInfo[PdfName.Create("GemBox.Pdf")] = data;

        // Create a private data dictionary that will hold private data that "GemBox.Pdf" conforming product understands.
        var privateData = PdfDictionary.Create();

        data[PdfName.Create("Data")] = privateData;

        // Set "Title" and "Version" entries to private data.
        privateData[PdfName.Create("Title")]   = PdfString.Create(ComponentInfo.Title);
        privateData[PdfName.Create("Version")] = PdfString.Create(ComponentInfo.Version);

        // Specify date of the last modification of "GemBox.Pdf" private data (required by PDF specification).
        data[PdfName.Create("LastModified")] = PdfString.Create("D:" + DateTimeOffset.Now.ToString("yyyyMMddHHmmssK", CultureInfo.InvariantCulture).Replace(':', '\'') + "'", PdfEncoding.ASCII, PdfStringForm.Literal);

        document.SaveOptions.CloseOutput = true;
        document.Save("Basic Objects.pdf");
    }
Пример #2
0
    static void Main()
    {
        // If using Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY");

        using (var document = new PdfDocument())
        {
            // Specify content stream's content as a sequence of content stream operands and operators.
            var content = new StringBuilder();
            // Begin a text object.
            content.AppendLine("BT");
            // Set the font and font size to use, installing them as parameters in the text state.
            // In this case, the font resource identified by the name F1 specifies the font externally known as Helvetica.
            content.AppendLine("/F1 12 Tf");
            // Specify a starting position on the page, setting parameters in the text object.
            content.AppendLine("70 760 Td");
            // Paint the glyphs for a string of characters at that position.
            content.AppendLine("(GemBox.Pdf) Tj");
            // End the text object.
            content.AppendLine("ET");

            // Create content stream and write content to it.
            var contentStream = PdfStream.Create();
            contentStream.Filters.AddFilter(PdfFilterType.FlateDecode);

            using (var stream = contentStream.Open(PdfStreamDataMode.Write, PdfStreamDataState.Decoded))
            {
                var contentBytes = PdfEncoding.Byte.GetBytes(content.ToString());
                stream.Write(contentBytes, 0, contentBytes.Length);
            }

            // Create font dictionary for Standard Type 1 'Helvetica' font.
            var font = PdfDictionary.Create();
            font[PdfName.Create("Type")]     = PdfName.Create("Font");
            font[PdfName.Create("Subtype")]  = PdfName.Create("Type1");
            font[PdfName.Create("BaseFont")] = PdfName.Create("Helvetica");

            // Add font dictionary to resources.
            var fontResources = PdfDictionary.Create();
            fontResources[PdfName.Create("F1")] = PdfIndirectObject.Create(font);

            var resources = PdfDictionary.Create();
            resources[PdfName.Create("Font")] = fontResources;

            // Create new empty A4 page.
            var page = document.Pages.Add();

            // Set contents and resources of a page.
            var pageDictionary = page.GetDictionary();
            pageDictionary[PdfName.Create("Contents")]  = PdfIndirectObject.Create(contentStream);
            pageDictionary[PdfName.Create("Resources")] = resources;

            document.Save("Content Stream.pdf");
        }
    }