PdfDocumentSource allows you to export PDF documents to other file formats which can be shared electronically. The following table lists the export filters along with the description about the various export formats to which the document can be exported:

PdfDocumentSource provides support for exporting the PDF documents to any external format through the C1DocumentSource class. Learn how C1DocumentSource supports the exporting of PDF documents in detail in the following sections.

Export PDF using Format Specific Filter

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, follow the steps below:

1. Add a button control to the form for exporting PDF.
2. Drag and drop PdfDocumentSource component from the Toolbox on the form to add it to the component tray.
3. Switch to the code view and add the following namespace in the code view.
    

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   using C1.Win.C1Document.Export;

4. Add a PDF file to the project. In our case, we have used PDF file named DefaultDocument.pdf.
5. Load the PDf file into the object of PdfDocumentSource using the LoadFromFile method.

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   c1PdfDocumentSource1.LoadFromFile(@"..\..\DefaultDocument.pdf");

6. Add the following code to the button's click event to export the PDF to HTML format using HtmlFilter class. Use the FileName property in HtmlFilter class to set the name of the html file. By default, the ShowOptions property is true, which means the options dialog will appear before exporting the document. Here, we have set this property to false.
   

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   //Create HTMLFilter object HtmlFilter filter = new HtmlFilter(); //Set the output file name filter.FileName = @"..\..\DefaultDocument.html"; filter.ShowOptions = false; if (filter.ShowOptionsDialog()) { //Export PDF c1PdfDocumentSource1.Export(filter); System.Diagnostics.Process.Start(filter.OutputFiles[0]); MessageBox.Show(this, "Document was successfully exported.", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information); }

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 setting the UseZipForMultipleFiles property to true.

//Create JPEGFilter object
JpegFilter filter = new JpegFilter();
filter.FileName = @"..\..\DefaultDocument.zip";
filter.UseZipForMultipleFiles = true;
filter.ShowOptions = false;
if (filter.ShowOptionsDialog())
{
    //Export PDF
    c1PdfDocumentSource1.Export(filter);
    System.Diagnostics.Process.Start(filter.OutputFiles[0]);
    MessageBox.Show(this, "Document was successfully exported.",
                    "Information", MessageBoxButtons.OK,
                    MessageBoxIcon.Information);
}

PdfDocumentSource allows you to enumerate the supported export formats for a PDF document using the SupportedExportProviders property. The property returns a collection of ExportProvider classes that contain information about the supported formats. This data can be used to create the corresponding export filter by using the NewExporter method of ExportProvider class, which is the base class from which all export providers with specific formats are derived. Different document types support different sets of export formats, therefore enumerating and creating the export filters via SupportedExportProviders property yields the correct results.

To export PDF using supported exporters, follow the steps below:

1. Drag and drop PdfDocumentSource component, SaveFileDialog, Button, and ComboBox controls from the Toolbox on the form.
2. In the Properties window, navigate to DropDownStyle property of the ComboBox and select DropDownList from the drop-down.
3. Add a PDF file to the project.
4. Switch to code view and add the following namespaces in the code view.
    

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   using System.IO; using C1.Win.C1Document; using C1.Win.C1Document.Export;

5. Load the PDF file into the object of C1PdfDocumentSource using the LoadFromFile method.
    

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   c1PdfDocumentSource1.LoadFromFile(@"..\..\DefaultDocument.pdf");

6. Add the following code below InitializeComponent method to get the list of supported exporters using SupportedExportProviders property.
    

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   var supportedProviders = c1PdfDocumentSource1.SupportedExportProviders; foreach (var sep in supportedProviders) cbExporter.Items.Add(new FileAction() { Text = string.Format("Export to {0}...", sep.FormatName), ExportProvider = sep });

7. Add the following code to add a class, FileAction, containing variables.
    

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   private class FileAction { public string Text { get; set; } public ExportProvider ExportProvider { get; set; } public override string ToString() { return Text; } }

8. Add the following code to create a method, DoExport, for exporting the PDF to another format using Export method.

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   private void DoExport(C1PdfDocumentSource pds, ExportProvider ep) { saveFileDialog1.DefaultExt = "." + ep.DefaultExtension; saveFileDialog1.FileName = Path.GetFileName("Document")+ "." + ep.DefaultExtension; saveFileDialog1.Filter = string.Format("{0} (*.{1})|*.{1}|All files (*.*)|*.*", ep.FormatName, ep.DefaultExtension); if (saveFileDialog1.ShowDialog(this) != DialogResult.OK) return; try { var exporter = ep.NewExporter(); exporter.ShowOptions = false; exporter.FileName = saveFileDialog1.FileName; if (exporter.ShowOptionsDialog()) { pds.Export(exporter); MessageBox.Show(this, "Document was successfully exported.", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information); } } catch (Exception ex) { MessageBox.Show(this, ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }

9. Add the following code to the button's click event to call the DoExport method that accepts the object of C1PdfDocumentSource and ExportProvider as parameters.

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   private void btnExport_Click(object sender, EventArgs e) { DoExport(c1PdfDocumentSource1, ((FileAction) cbExporter.SelectedItem).ExportProvider); }