PdfDocumentSource provides support for exporting a PDF file to an external format through Export method inherited from C1DocumentSource class.

To export PDF to HTML format

1. Add a button control to the design view for exporting PDF.
2. Switch to the code view and add the following namespaces in the code view.
   • Visual Basic
   • C#

   • Visual Basic

   Imports C1.Xaml.Document
   Imports C1.Xaml.Document.Export
   

   • C#

   using C1.Xaml.Document;
   using C1.Xaml.Document.Export;
   

3. Add a PDF file to the project. In our case, we have used PDF file named DefaultDocument.pdf.
4. Initialize the instance of C1PDFDocumentSource class using the following code:
   • Visual Basic
   • C#

   • Visual Basic

   Dim pds As New C1PdfDocumentSource()
   

   • C#

   C1PdfDocumentSource pds = new C1PdfDocumentSource();
   

5. Load the PDf file into the object of C1PdfDocumentSource using the LoadFromFileAsync method.
   • Visual Basic
   • C#

   • Visual Basic

   Dim fileName As String = Nothing
   
   sf = Await StorageFile.GetFileFromApplicationUriAsync(New Uri _
        ("ms-appx:///DefaultDocument.pdf"))
   Await pds.LoadFromFileAsync(sf)
   fileName = Path.GetFileName(sf.Name)
   

   • C#

   string fileName = null;
   
   sf = await StorageFile.GetFileFromApplicationUriAsync(
        new Uri("ms-appx:///DefaultDocument.pdf"));
   await pds.LoadFromFileAsync(sf);
   fileName = Path.GetFileName(sf.Name);
   

6. Add the following code to the button's click event to export the PDF to HTML format using HtmlFilter class.
   
   • Visual Basic
   • C#

   • Visual Basic

   Try
           'Create HTMLFilter object
           'HtmlFilter filter = new HtmlFilter();
           Dim filter As New RtfFilter()
           filter.ShowOptions = False
   
           Dim storageFolder As StorageFolder = ApplicationData.Current.LocalFolder
   
           'Create file
           Dim FileForWrite As StorageFile = Await storageFolder.CreateFileAsync("TestFile.rtf", _
                                             CreationCollisionOption.ReplaceExisting)
   
           'Set the output file name
           filter.StorageFile = FileForWrite
   
           'Export PDF
   
   
           Await pds.ExportAsync(filter)
   Catch ex As Exception
           Dim md As New MessageDialog(String.Format("Failed to export", ex.Message), "Error")
           Await md.ShowAsync()
   End Try
   

   • C#

   try
   {
       //Create HTMLFilter object
       RtfFilter filter = new RtfFilter();
       filter.ShowOptions = false;
   
       StorageFolder storageFolder = ApplicationData.Current.LocalFolder;
   
       //Create file
       StorageFile FileForWrite = await storageFolder.CreateFileAsync("TestFile.rtf",
                                  CreationCollisionOption.ReplaceExisting);
   
       //Set the output file name
       filter.StorageFile = FileForWrite;
   
       //Export PDF
       await pds.ExportAsync(filter);    
   }
   catch (Exception ex)
   {
       MessageDialog md = new MessageDialog(string.Format("Failed to export", 
                          ex.Message), "Error");
       await md.ShowAsync();
   }
   

To export PDF to an image file format

Similar code as above can be used for exporting a PDF document to a series of page image files in one of the supported image formats (JPEG, PNG, TIFF, etc.). It is also possible to create a single ZIP file containing the page images. The following code uses one of the image format filter class, JpegFilter, to export the multi-paged file to JPEG format and creates a single ZIP file of the exported images.

Try
        'Create JpegFilter object
        Dim jpgfilter As New JpegFilter()
        jpgfilter.UseZipForMultipleFiles = True
        jpgfilter.ShowOptions = False


        Dim storageFolder As StorageFolder = ApplicationData.Current.LocalFolder

        'Create file
        Dim file As StorageFile = Await storageFolder.CreateFileAsync("TestFile.zip", CreationCollisionOption.ReplaceExisting)

        'Set the output file name
        jpgfilter.StorageFile = file


        'Export PDF
        Await pds.ExportAsync(jpgfilter)
Catch ex As Exception
        Dim md As New MessageDialog(String.Format("Failed to export", ex.Message), "Error")
        Await md.ShowAsync()
End Try

try
{
    //Create JpegFilter object
    JpegFilter jpgfilter = new JpegFilter();
    jpgfilter.UseZipForMultipleFiles = true;
    jpgfilter.ShowOptions = false;


    StorageFolder storageFolder = ApplicationData.Current.LocalFolder;

    //Create file
    StorageFile file = await storageFolder.CreateFileAsync("TestFile.zip",
                       CreationCollisionOption.ReplaceExisting);

    //Set the output file name
    jpgfilter.StorageFile = file;
            

//Export PDF
await pds.ExportAsync(jpgfilter);
}
catch (Exception ex)
{
    MessageDialog md = new MessageDialog(string.Format("Failed to export", ex.Message), "Error");
    await md.ShowAsync();
}