Questions on Telerik Document Processing Forum

4 answers

251 views

Digital certificate - Document changes and Signing time

Hello,

We have been trying to use create a service for automatic document signing.

Right now we have two problems:

1) When you sign a document through acrobat, it gives you an option of locking the document. If you do this, on the signature properties you can read something like: "The certifier has specified that no changes are allowed to be made to this document."

Do we have access to any variable that grants control over this behaviour?

2) When signing a pdf with a digital certificate, the signing time includes the time zone for example: "2018/09/11 12:07:20 + 01'00'". Is there any way to retrieve the same format so we can put it on the appearance? (If we just use the signatureField.Signature.Properties.TimeOfSigning.toString(), it does not include the timezone)

I'll be willing to supply any other code necessary.

Thank you in advance.

PdfProcessing

answered on 20 Sep 2018

5 answers

176 views

Package.AddStream losing stream information

Hi.

I have recently started using the ZipLibrary and I am facing an issue when adding streams to a ZipPackage. I am trying to add two streams to the ZipPackage, one for a PowerPoint file and the other for a Excel file. Once it is packaged, I want to write it to the OutputStream. Before I add the streams to the package, their size is significantly larger and have data because when I export them as individual streams (outside of a zip) it works just fine. Once added it looks like they lose all of their data and when it outputs, the PPTX and XLSX files are empty and corrupt respectively.

Here is my code below as well as the SendZipToClient snippet from another forum post, is there anything wrong with it or is it an issue from the ZipLibrary?

Additional Info:
.NET version: 4.5
Current Browser: FireFox 21.0
Telerik version for ASP.NET AJAX: 2013.1.417.45
Language: C#

private void StreamReports(Dictionary<int, MemoryStream> ReportStreams)

{

string destPPTXFile = string.Format("{0}.pptx", txtPresentationName.Text);

string destXLSXFile = string.Format("{0}.xlsx", txtPresentationName.Text);

MemoryStream outputStream = new MemoryStream();

ZipPackage zipPackage = ZipPackage.Create(outputStream);

MemoryStream powerpointStream = ReportStreams[0];

MemoryStream excelStream = ReportStreams[1];

zipPackage.AddStream(powerpointStream, destPPTXFile);

zipPackage.AddStream(excelStream, destXLSXFile);

SendZipToClient(outputStream, zipPackage);

}

private void SendZipToClient(MemoryStream memStream, ZipPackage Package)

{

string destFile = string.Format("{0}.zip", txtPresentationName.Text);

Package.Close(false);

memStream.Position = 0;

if (memStream != null && memStream.Length > 0)

{

Response.Clear();

Response.AddHeader("content-disposition", "attachment; filename=\"" + destFile);

Response.ContentType = "application/zip";

Response.BufferOutput = false; // to prevent buffering

byte[] buffer = new byte[1024];

int bytesRead = 0;

while ((bytesRead = memStream.Read(buffer, 0, buffer.Length)) > 0)

{

Response.OutputStream.Write(buffer, 0, bytesRead);

}

Response.End();

}

ZipLibrary

answered on 18 Sep 2018

4 answers

366 views

Error when importing file with external image links using DocxFormatProvider

I have the following code which fails at the `.Import` statement:

public byte[] PopulateHtmlAndTextBookmarks(byte[] input, List<BookmarkInfo> bookmarks)

{

// Get the bytes into the Telerik doc object and load that into an editor

DocxFormatProvider provider = new DocxFormatProvider();

RadFlowDocument document = provider.Import(input);

The error is "System.ArgumentNullException: 'Value cannot be null. Parameter name: relationshipId'"

The issue appears to be that I have two images in that file (Open XML relationship IDs "rId7" and "rId8") that point to external URLs. If I change those images to point at files inside the DocX container it works fine.

Does DocxFormatProvider work with external image links?

(I'm using 2018.2.619.40)

PS I've tried to attach the file but it says only .jpg, .jpeg, .gif, .png are allowed

WordsProcessing

answered on 18 Sep 2018

4 answers

646 views

Access to OpenXML in docx.

Is it possible using Telerik's tools to get at the OpenXML file in a Word document?

WordsProcessing

answered on 13 Sep 2018

1 answer

358 views

Sign pdf with smart card

Is it possible using PdfProcessing?

PdfProcessing

answered on 12 Sep 2018

3 answers

184 views

File Compression For Insert in DataBase

Language: VB.NET

Hello,

I'm looking to use CompressedStream solution without really understanding its use.

What I am trying to do:
1. compress file.
2. Insert the compressed file into my Database.
3. Retrieve compressed file to unzip it.
4. Read file.

How can I efficiently compress the file ?
Which method should I use ?
What type of variable should I deal with ? (String, Byte ()?)

Would you have a functional example in .net to help me ?

Thanks for your help

ZipLibrary

answered on 07 Sep 2018

1 answer

600 views

How to retrieve fields and insert text in a pdf

Hello!

I'm trying to add fields from a database into a pdf like the image attached shows. I already read the FormFieldCollection documentation, but I'm lacking the knowledge to make it work.

Can someone please include a code example on how to do this ?

PdfProcessing

answered on 07 Sep 2018

2 answers

110 views

FormFields that are set

Hi,

I have form fields that are set to "Visible but doesn't print" but it does not seem to have any effect on the PDF after setting the values using the library.

Not sure if I am doing something wrong.

Thanks.

PdfProcessing