Create paasowrd for set of Pdf files from mentioned path

Shankar Reshmimath

Hi Team,

I am new to .Net Platform and I need to create windows application for creating Password and renaming all PDF files stored from specific path and once its renamed and password protected will be moved to Destination path.

I need to generate this application as EXE file..

I need your help in creating this..

3 Replies

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Leon D8y ago
Hi Shankar Reshmimath,

You need a PDF library to achieve this. Check the following article which demonstrates how to protect and unprotect a pdf file using Spire.PDF for .NET library:

https://www.e-iceblue.com/Tutorials/Spire.PDF/Spire.PDF-Program-Guide/Security/C-Encrypt-and-Decrypt-PDF-file.html
Maen Badwan8y ago
Hello Shankar,
If you mean you want to get all PDF files from a folder, rename and transfer each file to a different folder and protect each PDF with a password, you can do this using LEADTOOLS PDFFile .NET class, which provides the ability to read PDF files, protect them with passwords, and then encrypt them with user defined password.
The following code shows how you can do this using LEADTOOLS:
static void Main(string[] args)
{
string SourceFolder = @"..\..\SourceFiles\";
string TargetFolder = @"..\..\TargetFiles\";
if (System.IO.Directory.Exists(TargetFolder) == false)
   System.IO.Directory.CreateDirectory(TargetFolder);
string[] PDFFilesNames = System.IO.Directory.GetFiles(SourceFolder, "*.pdf");

for (int _index = 0; _index < PDFFilesNames.Length; _index++)
{
   string _pdfFileName = PDFFilesNames[_index];
   PDFFile pdfFile = new PDFFile(_pdfFileName);
   // Set the security options
   pdfFile.SecurityOptions = new PDFSecurityOptions();
   pdfFile.SecurityOptions.UserPassword = "TestPassword";
   pdfFile.SecurityOptions.EncryptionMode = PDFEncryptionMode.RC128Bit;

  // Encrypt the file by saving it to the destination file
   string _targetFileName = "UseAnyName_" + (_index + 1).ToString() + ".pdf";
   _targetFileName = TargetFolder + _targetFileName;
   pdfFile.Convert(1, -1, _targetFileName);
}
}
You can find more information here:
https://www.leadtools.com/help/leadtools/v20/dh/pdf/pdffile-convert.html
Sanwar Ranwa8y ago
Hello Shankar

Please Check these Links

https://stackoverflow.com/questions/12383409/password-protecting-a-pdf-file

http://www.rasteredge.com/how-to/csharp-imaging/pdf-edit-password/

http://www.rasteredge.com/how-to/vb-net-imaging/pdf-edit-password/

https://www.codeproject.com/Articles/570682/PDF-File-Writer-Csharp-Class-Library-Version-1-20