PdfDocumentProcessor Class

A non-visual component that allows you to generate PDF files from scratch and manipulate existing documents.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Docs.v19.2.dll

Declaration

C#

public class PdfDocumentProcessor :
    PdfDisposableObject

VB.NET

Public Class PdfDocumentProcessor
    Inherits PdfDisposableObject

Remarks

The PDF Document API allows you to perform various scenarios with PDF documents in code (create new documents, edit, split and merge files, etc.) Refer to the Examples section for examples on how to solve different tasks.

You need a license to the DevExpress Office File API or DevExpress Universal Subscription to use the PDF Document API. Refer to the DevExpress Subscription page for pricing information.

Example

This example shows how to programmatically create a document with graphics using the PDF Document API.

• Create an empty document with no pages by calling one of the PdfDocumentProcessor.CreateEmptyDocument overload methods (e.g., using a file path).
• Call the PdfDocumentProcessor.CreateGraphics method to create PDF graphics represented by the PdfGraphics class instance. Make sure that you have reference to the DevExpress.Pdf.Drawing assembly to access PdfGraphics.
• Draw the graphic content (e.g., an image, a string, lines, polygons) by calling the corresponding Draw method.
• Use the PdfDocumentProcessor.RenderNewPage method to render a page with created graphics.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-generate-a-document-layout-from-scratch-t244516

Program.cs

using DevExpress.Pdf;
using System;
using System.Drawing;

namespace DocumentCreationAPI
{
    class Program {

        static void Main(string[] args)
        {

            using (PdfDocumentProcessor processor = new PdfDocumentProcessor())
            {

                // Create an empty document.
                processor.CreateEmptyDocument("..\\..\\Result.pdf");

                // Create and draw PDF graphics.
                using (PdfGraphics graph = processor.CreateGraphics())
                {
                    DrawGraphics(graph);

                    // Render a page with graphics.
                    processor.RenderNewPage(PdfPaperSize.Letter, graph);
                }
            }
        }

        static void DrawGraphics(PdfGraphics graph)
        {

            // Draw text lines on the page.
            SolidBrush black = (SolidBrush)Brushes.Black;
            using (Font font1 = new Font("Times New Roman", 32, FontStyle.Bold))
            {
                graph.DrawString("PDF Document Processor", font1, black, 180, 150);
            }
            using (Font font2 = new Font("Arial", 20))
            {
                graph.DrawString("Display, Print and Export PDF Documents", font2, black, 168, 230);
            }
            using (Font font3 = new Font("Arial", 10))
            {
                graph.DrawString("The PDF Document Processor is a non-visual component " +
                                  "that provides the application programming interface of the PDF Viewer.", font3, black, 16, 300);
            }
        }
    }
}

Program.vb

Imports DevExpress.Pdf
Imports System
Imports System.Drawing

Namespace DocumentCreationAPI
    Friend Class Program

        Shared Sub Main(ByVal args() As String)

            Using processor As New PdfDocumentProcessor()

                ' Create an empty document.
                processor.CreateEmptyDocument("..\..\Result.pdf")

                ' Create and draw PDF graphics.
                Using graph As PdfGraphics = processor.CreateGraphics()
                    DrawGraphics(graph)

                    ' Render a page with graphics.
                    processor.RenderNewPage(PdfPaperSize.Letter, graph)
                End Using
            End Using
        End Sub

        Private Shared Sub DrawGraphics(ByVal graph As PdfGraphics)

            ' Draw text lines on the page. 
            Dim black As SolidBrush = CType(Brushes.Black, SolidBrush)
            Using font1 As New Font("Times New Roman", 32, FontStyle.Bold)
                graph.DrawString("PDF Document Processor", font1, black, 180, 150)
            End Using
            Using font2 As New Font("Arial", 20)
                graph.DrawString("Display, Print and Export PDF Documents", font2, black, 168, 230)
            End Using
            Using font3 As New Font("Arial", 10)
                graph.DrawString("The PDF Document Processor is a non-visual component " & "that provides the application programming interface of the PDF Viewer.", font3, black, 16, 300)
            End Using
        End Sub
    End Class
End Namespace

Inheritance

Object

DevExpress.Pdf.Native.PdfDisposableObject

PdfDocumentProcessor