Append PDF with C# REST API. https://kb.aspose.cloud/pdf/net/append-pdf-with-net-rest-api/

Append PDF with C# REST API.cs

using System;
using System.IO;
using Aspose.Pdf.Cloud.Sdk.Api;
using Aspose.Pdf.Cloud.Sdk.Model;

namespace Aspose.PDF.Cloud.Examples.Kb
{
    public class PdfTasks
    {
        public static void AppendPdf()
        {
            PdfApi pdfApi = new PdfApi("key", "sid");

            String fileName = "Sample.pdf";
            String appendFileName = "sample-input.pdf";
            try
            {
                // Upload source file to aspose cloud storage
                pdfApi.UploadFile(fileName, new MemoryStream(File.ReadAllBytes(fileName)));
                pdfApi.UploadFile(appendFileName, new MemoryStream(File.ReadAllBytes(appendFileName)));

                int startPage = 2;
                int endPage = 3;
                String storage = "";
                String folder = "";

                // Invoke Aspose.PDF Cloud SDK API to append pdf file
                DocumentResponse apiResponse = pdfApi.PostAppendDocument(fileName, appendFileName, startPage, endPage, storage, folder);

                if (apiResponse != null && apiResponse.Status.Equals("OK"))
                {
                    // Download created pdf file
                    Stream storageRes = pdfApi.DownloadFile(fileName);
                    storageRes.Position = 0;

                    using (FileStream fileStream = new FileStream("Sample_out.pdf", FileMode.Create, FileAccess.Write))
                    {
                        storageRes.CopyTo(fileStream);
                    }
                    Console.WriteLine("PDF appended successfully, Done!");
                    Console.ReadKey();
                }
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine("error:" + ex.Message + "\n" + ex.StackTrace);
            }

        }
    }
}