/// <summary>
/// Main method for running the sample.
/// </summary>
public static SampleOutputInfo[] Run(Stream input)
{
PDFDocumentFeatures df = new PDFDocumentFeatures();
// Do not load file attachments, new file attachments cannot be added.
df.EnableDocumentFileAttachments = false;
// Do not load form fields, form fields cannot be filled and new form fields cannot be added.
df.EnableDocumentFormFields = false;
// Do not load embedded JavaScript code, new JavaScript code at document level cannot be added.
df.EnableDocumentJavaScriptFragments = false;
// Do not load the named destinations, new named destinations cannot be created.
df.EnableDocumentNamedDestinations = false;
// Do not load the document outlines, new outlines cannot be created.
df.EnableDocumentOutline = false;
// Do not load annotations, new annotations cannot be added to existing pages.
df.EnablePageAnnotations = false;
// Do not load the page graphics, new graphics cannot be added to existing pages.
df.EnablePageGraphics = false;
PDFFixedDocument document = new PDFFixedDocument(input, df);
PDFStandardFont helvetica = new PDFStandardFont(PDFStandardFontFace.HelveticaBold, 24);
PDFBrush brush = new PDFBrush();
// Add a new page with some content on it.
PDFPage page = document.Pages.Add();
page.Canvas.DrawString("New page added to an existing document.", helvetica, brush, 20, 50);
// When document features have been specified at load time the document is automatically saved in incremental update mode.
document.Save(input);
return(null);
}
/// <summary>
/// Main method for running the sample.
/// </summary>
public static void Main(string[] args)
{
string supportPath = "..\\..\\..\\..\\..\\SupportFiles\\";
X509Certificate2 certificate = new X509Certificate2(supportPath + "O2SolutionsDemoCertificate.pfx", "P@ssw0rd!", X509KeyStorageFlags.Exportable);
FileStream input = File.OpenRead(supportPath + "formfill.pdf");
PDFFixedDocument document = new PDFFixedDocument(input);
input.Close();
// Sign the document
PDFSignatureField signField = document.Form.Fields["signhere"] as PDFSignatureField;
PDFCmsDigitalSignature signature = new PDFCmsDigitalSignature();
signature.SignatureDigestAlgorithm = PDFDigitalSignatureDigestAlgorithm.Sha256;
signature.Certificate = certificate;
signature.ContactInfo = "*****@*****.**";
signature.Location = "Cluj Napoca";
signature.Name = "O2 Solutions Support";
signature.Reason = "Simple signature";
signField.Signature = signature;
using (FileStream output = File.Create("MultipleDigitalSignatures.pdf"))
{
document.Save(output);
}
// For the second signature the document must be opened in incremental update mode
// by passing the PDFDocumentFeatures object to PDFFixedDocument constructor
PDFDocumentFeatures df = new PDFDocumentFeatures();
// Do not load file attachments, new file attachments cannot be added.
df.EnableDocumentFileAttachments = false;
// Load form fields to support signing.
df.EnableDocumentFormFields = true;
// Do not load embedded JavaScript code, new JavaScript code at document level cannot be added.
df.EnableDocumentJavaScriptFragments = false;
// Do not load the named destinations, new named destinations cannot be created.
df.EnableDocumentNamedDestinations = false;
// Do not load the document outlines, new outlines cannot be created.
df.EnableDocumentOutline = false;
// Do not load annotations, new annotations cannot be added to existing pages.
df.EnablePageAnnotations = true;
// Do not load the page graphics, new graphics cannot be added to existing pages.
df.EnablePageGraphics = false;
// Incremental update mode requires the changes to be added to the input file
input = File.OpenRead("MultipleDigitalSignatures.pdf");
document = new PDFFixedDocument(input, df);
input.Close();
signField = new PDFSignatureField("sign2");
document.Pages[0].Fields.Add(signField);
signField.Widgets[0].VisualRectangle = new PDFDisplayRectangle(150, 350, 200, 60);
signature = new PDFCmsDigitalSignature();
signature.SignatureDigestAlgorithm = PDFDigitalSignatureDigestAlgorithm.Sha256;
signature.Certificate = certificate;
signature.ContactInfo = "*****@*****.**";
signature.Location = "Cluj Napoca";
signature.Name = "O2 Solutions Support";
signature.Reason = "Simple signature";
signField.Signature = signature;
// The same file used as input must also be used as output as the Save method saves only the changes and not the entire file.
using (FileStream output = File.Open("MultipleDigitalSignatures.pdf", FileMode.Open))
{
document.Save(output);
}
}
