Tutorial: Document Writers Tutorial

Take the following steps to start a project and to add some code that uses SVG to convert a Microsoft Word DOCX file to PDF:

Start Visual Studio.
Choose File->New->Project from the menu.
In the New Project dialog box, choose either "Visual C# Projects" or "Visual Basic Projects" in the Projects Type List, and choose "Console Application" in the Templates List.
Type the project name as "DocumentWritersTutorial" in the Project Name field, and then click OK. If desired, type a new location for your project or select a directory using the Browse button, and then click OK.
Select Project->Properties from the menu, select the Build tab and change the Platform Targert from Any CPU to x86.
In the Solution Explorer window, right-click on the References folder, and select "Add Reference..." from the context menu. In the "Add Reference" dialog box, select the ".NET" tab, browse to the "<LEADTOOLS_INSTALLDIR>\Bin\Dotnet\Win32" folder, and select the following DLLs:
- Leadtools.dll
- Leadtools.Codecs.dll
- Leadtools.Codecs.Cmp.dll
- Leadtools.Codecs.Fax.dll
- Leadtools.Codecs.Tif.dll
- Leadtools.Codecs.Dox.dll
- Leadtools.Codecs.Jb2.dll
- Leadtools.Codecs.Png.dll
- Leadtools.Codecs.Wmf.dll
- Leadtools.Svg.dll
- Leadtools.Pdf.dll
- Leadtools.Forms.DocumentWriters.dll
Click the Select button and then press the OK button to add the above DLLs to the application.

Add the following lines at the beginning of the file:

[C#]


             using System.IO;
             using System.Diagnostics;
             using Leadtools;
             using Leadtools.Codecs;
             using Leadtools.Forms.DocumentWriters;

[Visual Basic]


             Imports System.IO
             Imports System.Diagnostics
             Imports Leadtools
             Imports Leadtools.Codecs
             Imports Leadtools.Forms.DocumentWriters

Add the following code snippet to the Main method:

[C#]


             var inFileName = @"C:\users\Public\Documents\LEADTOOLS Images\Leadtools.docx";
             var format = DocumentFormat.Pdf;
             
             // Create the output file name
             var dir = Path.GetDirectoryName(inFileName);
             var outFileName = Path.Combine(dir, "DocumentWriterTutorial." + DocumentWriter.GetFormatFileExtension(format));
             
             var codecs = new RasterCodecs();
             
             // Set 300 as the default resolution for loading document files
             codecs.Options.RasterizeDocument.Load.Resolution = 300;
             
             // Get the number of pages of the input file
             var pageCount = codecs.GetTotalPages(inFileName);
             
             Console.WriteLine("Number of pages {0}", pageCount);
             
             // Create an instance of the LEADTOOLS DocumentWriter
             var docWriter = new DocumentWriter();
             // Change this file to create a PDF file with overlay image
             var imageOverText = false;
             
             // Set the options
             if (format == DocumentFormat.Pdf)
             {
                // If PDF, set to PDF/A
                var pdfOptions = docWriter.GetOptions(format) as PdfDocumentOptions;
                pdfOptions.DocumentType = PdfDocumentType.PdfA;
                if (imageOverText)
                   pdfOptions.ImageOverText = true;
                docWriter.SetOptions(format, pdfOptions);
             }
             
             // Begin a new PDF document
             docWriter.BeginDocument(outFileName, format);
             
             // Add the pages
             for (var pageNumber = 1; pageNumber <= pageCount; pageNumber++)
             {
                // Load the page as SVG
                Console.WriteLine("Loading page {0}", pageNumber);
                var page = new DocumentSvgPage();
                page.SvgDocument = codecs.LoadSvg(inFileName, pageNumber, null);
                if (imageOverText)
                {
                   // If we are using image/text, then load the overlay raster image
                   page.Image = codecs.Load(inFileName, pageNumber);
                }
             
                // Add the page to the current document
                Console.WriteLine("Adding page {0}", pageNumber);
                docWriter.AddPage(page);
             
                if (page.SvgDocument != null)
                   page.SvgDocument.Dispose();
                if (page.Image != null)
                   page.Image.Dispose();
             }
             
             // Done, finish
             Console.WriteLine("Converting to final format");
             docWriter.EndDocument();
             codecs.Dispose();
             
             Console.WriteLine("Viewing the result");
             
             // Open the document in the default viewer
             Process.Start(outFileName);

[Visual Basic]


             Dim inFileName As String = "C:\users\Public\Documents\LEADTOOLS Images\Leadtools.docx"
             Dim format As DocumentFormat = DocumentFormat.Pdf
            
             ' Create the output file name
             Dim dir As String = Path.GetDirectoryName(inFileName)
             Dim outFileName As String = Path.Combine(dir, "DocumentWriterTutorial." + DocumentWriter.GetFormatFileExtension(format))
            
             Dim codecs As New RasterCodecs
            
             ' Set 300 as the default resolution for loading document files
             codecs.Options.RasterizeDocument.Load.Resolution = 300
            
             ' Get the number of pages of the input file
             Dim pageCount As Integer = codecs.GetTotalPages(inFileName)
            
             Console.WriteLine("Number of pages {0}", pageCount)
            
             ' Create an instance of the LEADTOOLS DocumentWriter
             Dim docWriter As New DocumentWriter()
             ' Change this file to create a PDF file with overlay image
             Dim imageOverText As Boolean = False
            
             ' Set the options
             If format = DocumentFormat.Pdf Then
                ' If PDF, set to PDF/A
                Dim pdfOptions = DirectCast(docWriter.GetOptions(format), PdfDocumentOptions)
                ' pdfOptions.DocumentType = PdfDocumentType.PdfA
                If imageOverText Then pdfOptions.ImageOverText = True
                docWriter.SetOptions(format, pdfOptions)
             End If
            
             ' Begin a new PDF document
             docWriter.BeginDocument(outFileName, format)
            
             ' Add the pages
             For pageNumber As Integer = 1 To pageCount
                ' Load the page as SVG
                Console.WriteLine("Loading page {0}", pageNumber)
                Dim page As New DocumentSvgPage()
                page.SvgDocument = codecs.LoadSvg(inFileName, pageNumber, Nothing)
                If imageOverText Then
                   ' If we are using image/text, then load the overlay raster image
                   page.Image = codecs.Load(inFileName, pageNumber)
                End If
            
                ' Add the page to the current document
                Console.WriteLine("Adding page {0}", pageNumber)
                docWriter.AddPage(page)
            
                If Not IsNothing(page.SvgDocument) Then page.SvgDocument.Dispose()
                If Not IsNothing(page.Image) Then page.Image.Dispose()
             Next
            
             ' Done, finish
             Console.WriteLine("Converting to final format")
             docWriter.EndDocument()
             codecs.Dispose()
            
             Console.WriteLine("Viewing the result")
            
             ' Open the document in the default viewer
             Process.Start(outFileName)

Build and Run the program to test it.
For information on using the LEADTOOLS Document Writers, refer to Programming with the LEADTOOLS Document Writers.

NOTE: If you encounter an "Invalid File Format" or "Feature Not Supported" exception, refer to Invalid File Format/Feature Not Supported.