Description

Specifies an array of DigitalSignature objects, each of which defines an X.509 certificate and is associated with a SignatureField in the document. These certificates can be used to digitally sign a PDF or a PDF/A file. For other formats this property has no meaning. To associate a certificate with a signature field a name must be specified for the field.

Syntax

public DigitalSignature[] SignatureFields { get; set; }

Public Property SignatureFields As DigitalSignature()

Examples

The following example signs a named PDF signature field with an X.509 certificate supplied by secure certificate-loading code.

SignatureField approval = new(new System.Drawing.Size(3000, 1000), "ApproverSignature", 10);
textControl.SignatureFields.Add(approval, FrameInsertionMode.AsCharacter);

DigitalSignature fieldSignature = new(certificate, null, "ApproverSignature");
SaveSettings saveSettings = new()
{
    SignatureFields = new[] { fieldSignature }
};
textControl.Save("signed-approval.pdf", StreamType.AdobePDF, saveSettings);

Dim approval As New SignatureField(New System.Drawing.Size(3000, 1000), "ApproverSignature", 10)
textControl.SignatureFields.Add(approval, FrameInsertionMode.AsCharacter)

Dim fieldSignature As New DigitalSignature(certificate, Nothing, "ApproverSignature")
Dim saveSettings As New SaveSettings() With {
    .SignatureFields = New DigitalSignature() { fieldSignature }
}
textControl.Save("signed-approval.pdf", StreamType.AdobePDF, saveSettings)