SignatureAppearance.DrawText( "Digitally signed by " + certificate.GetNameInfo(X509NameType.SimpleName, true)) PageContentBuilder signatureAppearance = new PageContentBuilder() Customize signature appearance, you can show all signature info, or just name or date Apply a visible signature widiget to represent the contents of the signature field. SignatureField.Signature = new Signature(certificate) Add signature object to a signature field, so we can add a visualization to it SignatureField signatureField = new SignatureField( "iDiTect Sign Field") First you need create a SignatureField with unique name
X509Certificate2 certificate = new X509Certificate2( "test.pfx", "iditect") PdfDocument document = pdfFile.Import(File.ReadAllBytes( "sample.pdf")) You can add normal infomation like "Reason", "Location", "Date", or insert specifical content as what you want.
#How to create free digital signature how to#
Here comes to the C# code of how to create visible text digital signature as below. How to Create Visible Text Digital Signature in PDF in C# language And this electronic signature can be inserting in target page and target area in PDF. The appearance of signature field can be chosen from three types: only showing text, only showing image, showing text and image. In order to sign a PDF file you will need a digital ertificate issued by a valid Certificate Authority(CA), which provide you a PKCS#12 certificate (PFX or P12 file) for signing PDF document in Winforms, WPF and ASP.NET web applications. Digital signature contains encrypted information and password protected.
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