261980: Updated the code example.

Author: sameerkhan001

Portfolio/Create-a-portfolio-and-attach-variety-of-documents/.NET/Create-a-portfolio-and-attach-variety-of-documents/Program.cs

@@ -6,22 +6,24 @@
 {
     //Create a new portfolio.
     document.PortfolioInformation = new PdfPortfolioInformation();
-
     //Set the view mode of the portfolio.
     document.PortfolioInformation.ViewMode = PdfPortfolioViewMode.Tile;
-
     //Get stream from the attachment PDF file. 
     FileStream pdfStream = new FileStream(Path.GetFullPath(@"Data/CorporateBrochure.pdf"), FileMode.Open, FileAccess.Read);
-
-    //Create the attachment.
-    PdfAttachment pdfFile = new PdfAttachment("CorporateBrochure.pdf", pdfStream);
-
-    //Set the file name. 
+    // Set the name of the attachment file
     pdfFile.FileName = "CorporateBrochure.pdf";
-
-    //Set the startup document to view.
+    // Provide a description for the attachment
+    pdfFile.Description = "This is a PDF document";
+    // Set the creation date of the attachment
+    pdfFile.CreationDate = DateTime.Now;
+    // Specify the MIME type of the attachment (important for identifying file type)
+    pdfFile.MimeType = "application/pdf";
+    // Optionally, set the modification date if needed
+    pdfFile.ModificationDate = DateTime.Now;
+    // Optionally, set the relationship (e.g., "Data", "Source", etc.)
+    pdfFile.Relationship = PdfAttachmentRelationship.Unspecified;
+    // Set this attachment as the startup document in the PDF portfolio
     document.PortfolioInformation.StartupDocument = pdfFile;
-
     //Add the attachment to the document.
     document.Attachments.Add(pdfFile);
     //Save the PDF document

Portfolio/Extracting-the-files-from-PDF-portfolio/.NET/Extracting-the-files-from-PDF-portfolio/Program.cs

@@ -3,18 +3,27 @@
 
 //Load the PDF document. 
 PdfLoadedDocument document = new PdfLoadedDocument(Path.GetFullPath(@"Data/Input.pdf"));
-
-string outputFileName = "";
-
-//Iterate the attachments.
+// Iterate through all attachments in the PDF document
 foreach (PdfAttachment attachment in document.Attachments)
 {
-    //Extract the attachment and save to the disk.
-    FileStream s = new FileStream(attachment.FileName, FileMode.Create);
-    s.Write(attachment.Data, 0, attachment.Data.Length);
-    s.Dispose();
-
-    outputFileName = attachment.FileName;
+    // Create a file stream to save the attachment to disk using its original file name
+    using (FileStream s = new FileStream(attachment.FileName, FileMode.Create))
+    {
+        // Write the attachment data to the file
+        s.Write(attachment.Data, 0, attachment.Data.Length);
+    }
+    // Retrieve the MIME type of the attachment (e.g., application/pdf, image/png)
+    string mimeType = attachment.MimeType;
+    Console.WriteLine($"Saved: {attachment.FileName}, MIME Type: {mimeType}");
+    // Optional: Access additional metadata if needed
+    DateTime creationDate = attachment.CreationDate;
+    DateTime modificationDate = attachment.ModificationDate;
+    string description = attachment.Description;
+    PdfAttachmentRelationship relationship = attachment.Relationship;
+    // Log or use the metadata as needed
+    Console.WriteLine($"Description: {description}");
+    Console.WriteLine($"Created on: {creationDate}, Modified on: {modificationDate}");
+    Console.WriteLine($"Relationship: {relationship}");
 }
 //Save the PDF document
 document.Save(Path.GetFullPath(@"Output/Output.pdf"));