public static void AddTextSignature2PDF()
{
PdfFile pdfFile = new PdfFile();
PdfDocument document = pdfFile.Import(File.ReadAllBytes("sample.pdf"));
//Input your certificate and password
X509Certificate2 certificate = new X509Certificate2("test.pfx", "iditect");
//First you need create a SignatureField with unique name
SignatureField signatureField = new SignatureField("iDiTect Sign Field");
//Add signature object to a signature field, so we can add a visualization to it
signatureField.Signature = new Signature(certificate);
//Add signature info as need
signatureField.Signature.Properties.Reason = "Sign by iDiTect";
signatureField.Signature.Properties.Location = "World Wide Web";
signatureField.Signature.Properties.ContactInfo = "1234567";
//Apply a visible signature widiget to represent the contents of the signature field.
SignatureWidget widget = signatureField.Widgets.AddWidget();
//Set signature position and size
widget.Rect = new System.Windows.Rect(new System.Windows.Point(200, 200), new System.Windows.Size(400, 100));
widget.RecalculateContent();
//Customize signature appearance, you can show all signature info, or just name or date
PageContentBuilder signatureAppearance = new PageContentBuilder(widget.Content.NormalContentSource);
signatureAppearance.Position.Translate(10, 0);
signatureAppearance.DrawText("Digitally signed by " + certificate.GetNameInfo(X509NameType.SimpleName, true));
signatureAppearance.Position.Translate(10, 20);
signatureAppearance.DrawText("Reason: " + signatureField.Signature.Properties.Reason);
signatureAppearance.Position.Translate(10, 40);
signatureAppearance.DrawText("Location: " + signatureField.Signature.Properties.Location);
signatureAppearance.Position.Translate(10, 60);
signatureAppearance.DrawText("Contact: " + signatureField.Signature.Properties.ContactInfo);
signatureAppearance.Position.Translate(10, 80);
signatureAppearance.DrawText("Date: " + DateTime.Now.ToString());
//Add this signature to first PDF page
document.Pages[0].Annotations.Add(widget);
document.AcroForm.FormFields.Add(signatureField);
//Digital sign feature need the stream support reading, so you have to use ReadWrite mode here
using (FileStream fs = new FileStream("signed.pdf", FileMode.Create, FileAccess.ReadWrite))
{
pdfFile.Export(document, fs);
}
}
public static void AddImageSignature2PDF()
{
PdfFile pdfFile = new PdfFile();
PdfDocument document = pdfFile.Import(File.ReadAllBytes("sample.pdf"));
//Input your certificate and password
X509Certificate2 certificate = new X509Certificate2("test.pfx", "iditect");
//First you need create a SignatureField with unique name
SignatureField signatureField = new SignatureField("iDiTect Sign Field");
//Add signature object to a signature field, so we can add a visualization to it
signatureField.Signature = new Signature(certificate);
//Add signature info as need
signatureField.Signature.Properties.Reason = "Sign by iDiTect";
signatureField.Signature.Properties.Location = "World Wide Web";
signatureField.Signature.Properties.ContactInfo = "1234567";
//Apply a visible signature widiget to represent the contents of the signature field.
SignatureWidget widget = signatureField.Widgets.AddWidget();
//Set signature position and size
widget.Rect = new System.Windows.Rect(new System.Windows.Point(200, 200), new System.Windows.Size(50, 50));
widget.RecalculateContent();
//Customize signature appearance, insert an image as signature displaying
PageContentBuilder signatureAppearance = new PageContentBuilder(widget.Content.NormalContentSource);
using (Stream imgStream = File.OpenRead("sample.jpg"))
{
signatureAppearance.DrawImage(imgStream);
}
//Add this signature to first PDF page
document.Pages[0].Annotations.Add(widget);
document.AcroForm.FormFields.Add(signatureField);
//Digital sign feature need the stream support reading, so you have to use ReadWrite mode here
using (FileStream fs = new FileStream("signed.pdf", FileMode.Create, FileAccess.ReadWrite))
{
pdfFile.Export(document, fs);
}
}