Quick Start: Converting a PDF document to a set of JPEG files using the web service API

The following C# code example converts a PDF document called Loan.pdf to a set of JPEG files and stores them in the C:\Adobe directory. Each file is named tempFile[index].jpg, where the first image file is named tempFile0.jpg. (See Converting PDF Documents to Image Formats.)

/*

 * Ensure that you create a .NET client assembly that uses 

 * base64 encoding. This is required to populate a BLOB 

 * object with data or retrieve data from a BLOB object.

 * 

 * For information, see "Invoking LiveCycle ES using Base64 Encoding" 

 * in Programming with LiveCycle ES

 */

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.IO;

namespace ConvertPDFWSApp

{

    class ConvertPDFtoImageTest

    {

        [STAThread]

        static void Main(string[] args)

        {

            try

            {

                // Create a ConvertPdfServiceService object

                ConvertPdfServiceService svc = new ConvertPdfServiceService();

                // Provide authentication credentials to the service

                svc.Credentials = new System.Net.NetworkCredential(

                    "administrator",

                    "password"

                    );

                // Create a BLOB that represents the input PDF file

                BLOB inDoc = new BLOB();

                // Get the input PDF document

                string inputFileName = "C:\\Adobe\\Loan.pdf";

                FileStream fs = new FileStream(inputFileName, FileMode.Open);

                // Get the length of the file stream and create a byte array 

                int len = (int)fs.Length;

                byte[] byteArray = new byte[len];

                // Populate the byte array with the contents of the file stream

                fs.Read(byteArray, 0, len);

                // Populate the BLOB object

                inDoc.binaryData = byteArray;

                //Set up the runtime options for the new JPEG files to create

                ToImageOptionsSpec spec = new ToImageOptionsSpec();

                spec.imageConvertFormat = ImageConvertFormat.JPEG;

                spec.grayScaleCompression = GrayScaleCompression.Low;

                spec.colorCompression = ColorCompression.Low;

                spec.format = JPEGFormat.BaselineOptimized;

                spec.rgbPolicy = RGBPolicy.Off;

                spec.cmykPolicy = CMYKPolicy.Off;

                spec.colorSpace = ColorSpace.RGB;

                spec.resolution = "72";

                spec.monochrome = MonochromeCompression.None;

                spec.filter = PNGFilter.Sub;

                spec.interlace = Interlace.Adam7;

                spec.tileSize = 180;

                spec.grayScalePolicy = GrayScalePolicy.Off;

                //Send the conversion request to the ConvertPDF Service

                Object[] allImages = svc.toImage2(inDoc, spec);

                //Get the length of the object array

                int arrLen = allImages.Length;

                //Get all images from the Object array

                for (int i = 0; i < arrLen; i++)

                {

                    BLOB imageData = (BLOB)allImages[i];

                    //Populate a byte array with a BLOB data

                    byte[] outByteArray = imageData.binaryData;

                    //Create a new file that represents the image

                    string FILE_NAME = "C:\\Adobe\\tempFile" + i + ".jpg";

                    FileStream fs2 = new FileStream(FILE_NAME, FileMode.OpenOrCreate);

                    //Create a BinaryWriter object

                    BinaryWriter w = new BinaryWriter(fs2);

                    w.Write(outByteArray);

                    w.Close();

                    fs2.Close();

                }

                Console.WriteLine("The PDF file was converted to a set of JPEG document(s).");

            }

            catch (Exception ee)

            {

                Console.WriteLine("An unexpected exception was encountered: " + ee.Message + "\n" + ee.StackTrace);

            }

        }

    }

}

 

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