IsValid

DigitalSignature.IsValid property

Returns true if this digital signature is valid and the document has not been tampered with.

public bool IsValid { get; }

Examples

Shows how to validate and display information about each signature in a document.

Document doc = new Document(MyDir + "Digitally signed.docx");

foreach (DigitalSignature signature in doc.DigitalSignatures)
{
    Console.WriteLine($"{(signature.IsValid ? "Valid" : "Invalid")} signature: ");
    Console.WriteLine($"\tReason:\t{signature.Comments}");
    Console.WriteLine($"\tType:\t{signature.SignatureType}");
    Console.WriteLine($"\tSign time:\t{signature.SignTime}");
    Console.WriteLine($"\tSubject name:\t{signature.CertificateHolder.Certificate.SubjectName}");
    Console.WriteLine($"\tIssuer name:\t{signature.CertificateHolder.Certificate.IssuerName.Name}");
    Console.WriteLine();
}

IsValid

DigitalSignature.IsValid property

Examples

See Also