ASP.NET PDF Viewer Control
How to open, view Microsoft PowerPoint with bookmark online using C# in web browser


Easy to upload, open, view, display, markup Microsoft PowerPoint document online, and create PDF bookmark online











About this tutorial



This tutorial page will setup an ASP.NET web site which allows users to open, view, markup, redate Microsoft Office PowerPoint document, and create PDF bookmarks based PowerPoint content.






How to view, modify Microsoft PowerPoint document online with bookmark created using C#, asp.net



Using EdgePDF, you can allow your web user to open, view, markup Office PowerPoint documents online in web browser, and create PDF bookmark based PowerPoint document content.

The following steps and code snippet shows you how to read, view PowerPoint with bookmark using C#, asp.net


  1. Setup EdgePDF demo project in IIS
  2. In demo project UserCommandProcessHandler.ashx, read PowerPoint with bookmark in EdgePDF
  3. Save new/updated PDF file on the web server


The following source code shows how to read, view PowerPoint with bookmark in UserCommandProcessHandler.ashx



    public byte[] ApplyAddonPowerPointInOpenFunction(String srcFilePath)
    {
        //  Load source .pptx file.
        PPTXDocument doc = new PPTXDocument(srcFilePath);
        //  Enable bookmark flag to show bookmarks. Default: false.
        doc.EnableBookmark = true;
        //  Convert to PDF file and return the data bytes of the result file.
        using (MemoryStream ms = new MemoryStream())
        {
            doc.ConvertToDocument(DocumentType.PDF, ms);
            return ms.ToArray();
        }
    }








Complete source code of UserCommandProcessHandler.ashx



You can find the complete source code for reading, viewing Office PowerPoint document with bookmark created in the downloaded package /DemoProjects/EdgePDF Demo Project/RasterEdge_Resource_Files/Tutorials/UserCommandProcessHandler-addon-powerpoint.ashx

To use the above tutorial, you need copy the UserCommandProcessHandler-addon-powerpoint.ashx to the EdgePDF project location /RasterEdge_Resource_Files/, and change file name to UserCommandProcessHandler.ashx



<%@ WebHandler Language="C#" Class="UserCommandProcessHandler" %>

using System;
using System.IO;
using System.Web;
using RasterEdge.Imaging.Basic;
using RasterEdge.XDoc.PowerPoint;
using RasterEdge.WDP;
using RasterEdge.XDoc.PDF.HTML5Editor;

public class UserCommandProcessHandler : ProcessHandler
{

    /*
         The SDK will use the following url parameter names, please do not use them
          RECommand, src, filepath, restful
    */
    public override PDFWebDocument FileProcess()
    {
        HttpRequest request = this.Context.Request;

        if (!String.IsNullOrEmpty(request.QueryString["yourtarget"]))
        {
            // load file
            String docid = request.QueryString["yourtarget"];
            try
            {
                if (String.IsNullOrEmpty(docid) || !docid.EndsWith(".pptx"))
                    throw new Exception("Source file must be a .pptx file.");

                byte[] dataBytes = ApplyAddonPowerPointInOpenFunction(@"C:\\temp\" + docid);
                String fileName = docid.Replace(".pptx", ".pdf");
                return REProcessControl.PageLoadFile(request, this.Manager, dataBytes, fileName);
            }
            catch (Exception ex)
            {
                Logger.Log("FileProcess: fail to open file " + docid + ". " + ex.Message, LogType.ERROR);
                return null;
            }
        }
        else
        {
            Logger.Log(">>> Unknown load file mode. Load default file defined in Web.config.", LogType.DEBUG);

            // load default file. defined in Web.config
            return REProcessControl.PageLoadFile(request, this.Manager, "", LoadType.Server);
        }
    }

    //  fid: Task ID.
    //  savePath: The abosolute path of the saved PDF file in the task's output folder.
    //  responseMsg: The response message for saving the current document to the task's output folder.
    //               The string value is the relative path of the output file. "Error" means that the saving process is failed.
    public override void SaveFile_OnServer(String fid, String savePath, String responseMsg)
    {
        //  You can process saved pdf document here, like add watermark, ...
        var documentPath = savePath;
        if (!String.IsNullOrEmpty(documentPath))
        {
            Logger.LogFile(fid, "SaveFileOnServer: output file path " + documentPath, LogType.DEBUG);

            //  To verify the output file.
            RasterEdge.Imaging.Basic.BaseDocument document = null;
            if (documentPath.EndsWith(".pdf"))
            {
                // document object includes user modified content
                document = new RasterEdge.XDoc.PDF.PDFDocument(documentPath);
            }
            if (document != null)
            {
                RasterEdge.XDoc.PDF.PDFDocument pdfDoc = document as RasterEdge.XDoc.PDF.PDFDocument;
                try
                {
                    //  Post-process
                    RasterEdge.XDoc.PDF.PDFMetadata metadata = pdfDoc.GetDescription();
                    metadata.Producer = "RasterEdge EdgePDF";
                    pdfDoc.SetDescription(metadata);
                }
                catch (Exception ex)
                {
                    //  Process error code, and return error information here
                    Logger.LogFile(fid, ex.Message + ". fail to do post-process.", LogType.ERROR);
                }

                //  Get the upload information of the file
                RasterEdge.WDP.DocUploadInfo docinfo = RasterEdge.WDP.Manager.FileManager.getUploadinfoByFid(fid);
                //  Get your file open url parameters value, if needed.
                String paraFilepathValue = docinfo.GetRequestParameters("yourtarget");
                if (!String.IsNullOrEmpty(paraFilepathValue))
                {
                    try
                    {
                        //  Replace file extension (".pptx") to ".pdf".
                        int index = paraFilepathValue.LastIndexOf('.');
                        if (index > 0)
                            paraFilepathValue = paraFilepathValue.Substring(0, index);
                        pdfDoc.Save(@"C:\temp\" + paraFilepathValue + ".pdf");
                    }
                    catch (Exception ex)
                    {
                        //  Process error code, and return error information here
                        Logger.LogFile(fid, ex.Message + ". fail to save file to server.", LogType.ERROR);
                    }
                }
                else
                {
                    Logger.LogFile(fid, "no 'yourtarget' in the HTTPRequest.", LogType.INFO);
                }
            }
            else
            {
                Logger.LogFile(fid, "output PDF file is invalid.", LogType.ERROR);
            }
        }
        else
        {
            Logger.LogFile(fid, "fail to save file to server. output file path is null or empty.", LogType.ERROR);
        }
    }

    public byte[] ApplyAddonPowerPointInOpenFunction(String srcFilePath)
    {
        //  Load source .pptx file.
        PPTXDocument doc = new PPTXDocument(srcFilePath);
        //  Enable bookmark flag to show bookmarks. Default: false.
        doc.EnableBookmark = true;
        //  Convert to PDF file and return the data bytes of the result file.
        using (MemoryStream ms = new MemoryStream())
        {
            doc.ConvertToDocument(DocumentType.PDF, ms);
            return ms.ToArray();
        }
    }
}