PdfDocumentSigner.SaveDocument(Stream, PdfSignatureBuilder[]) Method

Saves the PDF document to a stream with the specified document signatures.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Docs.v25.1.dll

NuGet Package: DevExpress.Document.Processor

Declaration

C#

public void SaveDocument(
    Stream stream,
    params PdfSignatureBuilder[] signatures
)

VB.NET

Public Sub SaveDocument(
    stream As Stream,
    ParamArray signatures As PdfSignatureBuilder()
)

Parameters

Name	Type	Description
stream	Stream	The stream to which to save the document.
signatures	PdfSignatureBuilder[]	An array of signatures to apply to the document.

Remarks

Call the SaveDocument method to apply one or more signatures to the PDF document. Specify the document to be signed in the PdfDocumentSigner object’s constructor.

You can add a signature to the existing signature field. Create a new PdfSignatureBuilder object with the signature field’s name passed as the constructor’s parameter.

Use the PdfSignatureFieldInfo instance in the PdfSignatureBuilder object constructor to create a new signature field. You can specify the field’s name, bounds, and rotation angle.

The PDF Document API supports PKCS#7 signatures. The Pkcs7Signer class allows you to create this signature type. You can create a Pkcs7SignerBase descendant to use a custom object to create the PKCS#7 signature.

C#

using DevExpress.Pdf;
using DevExpress.Office.DigitalSignatures;

// Load a document to be signed
using (var signer = new PdfDocumentSigner("Document.pdf"))
{
    // Create a PKCS#7 signature
    Pkcs7Signer pkcs7Signature = new Pkcs7Signer("Signing Documents//testcert.pfx", "123", HashAlgorithmType.SHA256);

    // Apply a signature to the Sign form field
    var signatureBuilder = new PdfSignatureBuilder(pkcs7Signature, "Sign");

    // Specify the signature's image and signer information:
    signatureBuilder.SetImageData(System.IO.File.ReadAllBytes("Signing Documents//Jane Cooper.jpg"));
    signatureBuilder.Location = "USA";
    signatureBuilder.Name = "Jane Cooper";
    signatureBuilder.Reason = "I Agree";

    // Sign and save the document
    signer.SaveDocument("SignedDocument.pdf", signatureBuilder);
}

VB.NET

Imports DevExpress.Pdf
Imports DevExpress.Office.DigitalSignatures

' Load a document to be signed
Using signer = New PdfDocumentSigner("Document.pdf")

  ' Create a PKCS#7 signature
  Dim pkcs7Signature As New Pkcs7Signer("Signing Documents//testcert.pfx", "123", HashAlgorithmType.SHA256)

  ' Apply a signature to the Sign form field
  Dim signatureBuilder = New PdfSignatureBuilder(pkcs7Signature, "Sign")

  ' Specify the signature's image and signer information:
  signatureBuilder.SetImageData(System.IO.File.ReadAllBytes("Signing Documents//Jane Cooper.jpg"))
  signatureBuilder.Location = "USA"
  signatureBuilder.Name = "Jane Cooper"
  signatureBuilder.Reason = "I Agree"

  ' Sign and save the document
  signer.SaveDocument("SignedDocument.pdf", signatureBuilder)
End Using