How to Add and Remove PDF Attachments

// Import the necessary namespaces for working with PDFs and file I/O
using IronPdf;
using System.IO;

// Ensure the path to the file you want to attach is correct. Replace "path/to/file" with an actual file path.
string filePath = @"path/to/file";

// Check if the file exists to prevent errors during file reading.
if (File.Exists(filePath))
{
    // Load all bytes from the specified file into a byte array.
    byte[] fileData = File.ReadAllBytes(filePath);

    // Load an existing PDF document from a file named "sample.pdf".
    // Ensure the file "sample.pdf" exists in the same directory or provide a full path.
    if (File.Exists("sample.pdf"))
    {
        PdfDocument pdf = PdfDocument.FromFile("sample.pdf");

        // Add an attachment to the PDF document using the previously loaded file data.
        // The attachment is given a name "Example" which will appear in the PDF's attachment pane.
        pdf.Attachments.AddAttachment("Example", fileData);

        // Save the modified PDF with the attachment to a new file called "addAttachment.pdf".
        // Ensure you have write permissions to the directory to save the file.
        pdf.SaveAs("addAttachment.pdf");
    }
    else
    {
        // Handle the case where "sample.pdf" does not exist.
        System.Console.WriteLine("The file sample.pdf does not exist.");
    }
}
else
{
    // Handle the case where the file to be attached does not exist.
    System.Console.WriteLine($"The file {filePath} does not exist.");
}

' Import the necessary namespaces for working with PDFs and file I/O

Imports IronPdf

Imports System.IO



' Ensure the path to the file you want to attach is correct. Replace "path/to/file" with an actual file path.

Private filePath As String = "path/to/file"



' Check if the file exists to prevent errors during file reading.

If File.Exists(filePath) Then

	' Load all bytes from the specified file into a byte array.

	Dim fileData() As Byte = File.ReadAllBytes(filePath)



	' Load an existing PDF document from a file named "sample.pdf".

	' Ensure the file "sample.pdf" exists in the same directory or provide a full path.

	If File.Exists("sample.pdf") Then

		Dim pdf As PdfDocument = PdfDocument.FromFile("sample.pdf")



		' Add an attachment to the PDF document using the previously loaded file data.

		' The attachment is given a name "Example" which will appear in the PDF's attachment pane.

		pdf.Attachments.AddAttachment("Example", fileData)



		' Save the modified PDF with the attachment to a new file called "addAttachment.pdf".

		' Ensure you have write permissions to the directory to save the file.

		pdf.SaveAs("addAttachment.pdf")

	Else

		' Handle the case where "sample.pdf" does not exist.

		System.Console.WriteLine("The file sample.pdf does not exist.")

	End If

Else

	' Handle the case where the file to be attached does not exist.

	System.Console.WriteLine($"The file {filePath} does not exist.")

End If

using IronPdf;
using System.IO;

// Load an existing PDF document using IronPdf
// The PDF document "addAttachment.pdf" should be present in the execution folder or its full path should be specified.
PdfDocument pdf = PdfDocument.FromFile("addAttachment.pdf");

// Iterate through all attachments in the PDF document
foreach (var attachment in pdf.Attachments)
{
    // Check if the attachment's name contains the string "Example"
    if (attachment.Name.Contains("Example"))
    {
        // Save the attachment's data (byte array) as a file
        // The file is saved with the same name as the attachment, but with a .doc extension
        File.WriteAllBytes($"{attachment.Name}.doc", attachment.Data);
    }
}

Imports IronPdf

Imports System.IO



' Load an existing PDF document using IronPdf

' The PDF document "addAttachment.pdf" should be present in the execution folder or its full path should be specified.

Private pdf As PdfDocument = PdfDocument.FromFile("addAttachment.pdf")



' Iterate through all attachments in the PDF document

For Each attachment In pdf.Attachments

	' Check if the attachment's name contains the string "Example"

	If attachment.Name.Contains("Example") Then

		' Save the attachment's data (byte array) as a file

		' The file is saved with the same name as the attachment, but with a .doc extension

		File.WriteAllBytes($"{attachment.Name}.doc", attachment.Data)

	End If

Next attachment

using IronPdf;
using System.Linq;

// Load an existing PDF document from a file
PdfDocument pdf = PdfDocument.FromFile("addAttachment.pdf");

// Retrieve the collection of attachments from the PDF document
PdfAttachmentCollection attachments = pdf.Attachments;

// Check if there are any attachments present in the document
if (attachments.Any())
{
    // Remove the first attachment in the collection
    attachments.Remove(attachments.First());
    // Note: Using 'Remove' method of PdfAttachmentCollection to remove the attachment
}

// Save the modified PDF to a new file with the specified name
pdf.SaveAs("removeAttachment.pdf");

Imports IronPdf

Imports System.Linq



' Load an existing PDF document from a file

Private pdf As PdfDocument = PdfDocument.FromFile("addAttachment.pdf")



' Retrieve the collection of attachments from the PDF document

Private attachments As PdfAttachmentCollection = pdf.Attachments



' Check if there are any attachments present in the document

If attachments.Any() Then

	' Remove the first attachment in the collection

	attachments.Remove(attachments.First())

	' Note: Using 'Remove' method of PdfAttachmentCollection to remove the attachment

End If



' Save the modified PDF to a new file with the specified name

pdf.SaveAs("removeAttachment.pdf")