PDF Export
The libraries included in Telerik Document Processing allow you to create, modify and export PDF documents, as well as convert a document from different file format to PDF.
Depending on the scenario, you could take advantage of the different functionalities each library provides. This article will describe the most common approaches for creating a PDF document and how to achieve the desired goal using Telerik Document Processing.
The .NET Standard specification does not define APIs for getting specific fonts. PdfFormatProvider needs to have access to the font data so that it can read it and add it to the PDF file. That is why, to allow the library to create and use fonts, you will need to provide an implementation of the FontsProviderBase abstract class and set this implementation to the FontsProvider property of FixedExtensibilityManager. For detailed information, check the Cross-Platform Support article.
Create a PDF Document From Scratch
RadPdfProcessing is intended to work with fixed documents and provides a convenient API to create, modify and export PDF documents. To use its import and export functionalities, you will need to add a reference to the Telerik.Windows.Documents.Fixed assembly.
You can import and export a document through the respective methods of the PdfFormatProvider class.
The PdfFormatProvider class of RadPdfProcessing resides in the Telerik.Windows.Documents.Fixed.FormatProviders.Pdf namespace. For more information on how to work with this provider, please read this topic.
Convert a Document to PDF
In scenarios where you need to convert a document from another file format to PDF, you could take advantage of the capabilities of RadWordsProcessing. This library allows you to import documents from the most common rich text formats (Docx, HTML, RTF) as well as plain text and export them to PDF. All the supported document formats and the corresponding format providers are listed in the Formats and Conversion section.
In order to use the PdfFormatProvider of RadWordsProcessing, you should add a reference to the Telerik.Windows.Documents.Flow.FormatProviders.Pdf assembly.
The PdfFormatProvider class of RadWordsProcessing resides in the Telerik.Windows.Documents.Flow.FormatProviders.Pdf namespace. For more information on how to work with this provider, please read this topic.
Convert HTML to PDF
Example 1 demonstrates how you can convert an HTML string to a PDF document. The HtmlFormatProvider and PdfFormatProvider classes of RadWordsProcessing are used to import/export the RadFlowDocument instance.
Example 1: HTML to PDF conversion
string htmlContent = "<!DOCTYPE html><html><body><p>Hello, world!</p></body></html>";
Telerik.Windows.Documents.Flow.FormatProviders.Html.HtmlFormatProvider htmlProvider = new Telerik.Windows.Documents.Flow.FormatProviders.Html.HtmlFormatProvider();
// Create a document instance from the content.
RadFlowDocument document = htmlProvider.Import(htmlContent);
Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider pdfProvider = new Telerik.Windows.Documents.Flow.FormatProviders.Pdf.PdfFormatProvider();
// Export the document. The different overloads enables you to export to a byte[] or to a Stream.
byte[] pdfBytes = pdfProvider.Export(document);
Convert a Spreadsheet Document to PDF
While the so far discussed libraries allow working with text documents, with RadSpreadProcessing you can create, import and export tabular data. This library supports the most common file formats for storing spreadsheet documents - Xlsx, CSV. All format providers are listed and described in the corresponding Formats and Conversion section.
In order to enable the export to PDF in RadSpreadProcessing, you will need to add a reference to the Telerik.Windows.Documents.Spreadsheet.FormatProviders.Pdf assembly.
The PdfFormatProvider class of RadSpreadProcessing resides in the Telerik.Windows.Documents.Spreadsheet.FormatProviders.Pdf namespace. For more information on how to work with this provider, please read this topic.