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ASP.NET MVC PDF Viewer for Azure
How to view, convert PDF to Microsoft Word programmatically without Office, interop installed in ASP.NET MVC on Azure using C#?
How to open, view, comment, edit Adobe PDF online, and convert modified PDF to Word in web browser using C# in ASP.NET MVC web application.
Open, read, view and comment an existing PDF, and convert to Word in ASP.NET using C# is very simple. EdgePDF provides a simple C# demo code to accomplish the job.
- Open, read, view, edit an existing PDF file from server file system, database, or network in web browser
- Convert modified PDF document to Office Word .docx file online in ASP.NET
How to view PDF online and export to Word programmatically in asp.net using C#
Preparation
To run the following tutorial successfully, we need the following setup ready.
- For ASP.NET Core web app: Setup EdgePDF
- For ASP.NET Core MVC web app: Setup EdgePDF
- For ASP.NET (.net framework): Setup EdgePDF on IIS
- Several demo PDF files in folder C:\temp\
How to convert, export PDF to Word file using C# in ASP.NET web application?
The following steps and C# source code will learn how to open, view, edit a PDF file in web browser using C# ASP.NET, and export modified PDF document to Office Word (.docx) file in the web server in ASP.NET web application.
After you have completed the following guide, you can open, view, comment a PDF file online through url (a sample url
http://localhost:56643/?yourtarget=pdf-1.pdf)
To export the modified PDF file to Microsoft Word document in web server
- Go to EdgePDF toolbar in web browser
- Click tab "Customize"
- Click command button "Save Server"
- For ASP.NET Core web app, open file UserCommandProcessMiddleware.cs from /DemoProjects/EdgePDF for ASP.NET Core/
- For ASP.NET (.net framework) project, open file UserCommandProcessHandler.ashx from {EdgePDF demo project}/RasterEdge_Resource_Files/
- Go to method SaveFile_OnServer()
- Create a new PDFDocument object with EdgePDF displayed PDF file loaded
- Define a new file path var ("newExportFilepath") for converted Word document
- Use method PDFDocument.ConvertToDocument() save and convert the modified PDF document into a new Word .docx file
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)
{
// 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
{
string newExportFilepath = paraFilepathValue.Replace(".pdf", "-exported-to-word.docx");
document.ConvertToDocument(DocumentType.DOCX, @"C:\temp\" + newExportFilepath);
}
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);
}
}
How to convert, export scanned PDF to text editable, searchable Word file using C# in ASP.NET web application?
The following contents and C# source code will show how to export a scanned PDF file into text editable, searchable Office Word document in web browser using ASP.NET C# code.
After you have completed the following guide, you can open, view a scanned PDF file through url (a sample url
http://localhost:56643/?yourtarget=pdf-scanned-1.pdf).
To export the scanned PDF file to text searchable Word document in web server
- Go to EdgePDF toolbar in web browser
- Click tab "Customize"
- Click command button "Save Server"
- For ASP.NET Core web app, open file UserCommandProcessMiddleware.cs from /DemoProjects/EdgePDF for ASP.NET Core/
- For ASP.NET (.net framework) project, open file UserCommandProcessHandler.ashx from {EdgePDF demo project}/RasterEdge_Resource_Files/
- Go to method SaveFile_OnServer()
- Create a new PDFDocument object with EdgePDF displayed PDF file loaded
- Define a new file path var ("newExportFilepath") for converted Word document
- Start using OCR to extract text content from the scanned PDF document
- Define OCR train resource files path using method OCRHandler.SetTrainResourcePath()
- For each PDF page, convert it to a OCRPage object
- Combine all OCRPage objects into a new text editable PDF document
- Last step: use method PDFDocument.ConvertToDocument() convert the new text PDF document into a new Word file
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)
{
// 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
{
string newExportFilepath = paraFilepathValue.Replace(".pdf", "-exported-to-editable-word.docx");
// The folder that contains '.traineddata' files.
OCRHandler.SetTrainResourcePath(@"C:\Source");
int pageCount = document.GetPageCount();
MemoryStream[] streams = new MemoryStream[pageCount];
for (int i = 0; i < document.GetPageCount(); i++)
{
streams[i] = new MemoryStream();
OCRPage page = OCRHandler.Import(document.GetPage(i));
page.Recognize();
page.SaveTo(MIMEType.PDF, streams[i]);
}
MemoryStream editablePDFDocStream = new MemoryStream();
PDFDocument.CombineDocument(streams, editablePDFDocStream);
PDFDocument editablePDFDoc = new PDFDocument(editablePDFDocStream);
editablePDFDoc.ConvertToDocument(DocumentType.DOCX, @"C:\temp\" + newExportFilepath);
}
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);
}
}
How to deploy ASP.NET PDF to Word conversion web application to Azure
After finish the ASP.NET PDF to Word converter web application, you could easily publish the web app to Azure cloud service. View details at
How to deploy ASP.NET MVC PDF viewer web application to Azure?
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