DigitalSignatureFieldHasCryptographicSignature Method

Assignment operator

Returns whether the digital signature field has been cryptographically signed. Checks whether there is a digital signature dictionary in the field and whether it has a Contents entry. Must be called before using various digital signature dictionary-related functions. Does not check validity - will return true even if a valid hash has not yet been generated (which will be the case after [Certify/Sign]OnNextSave[WithCustomHandler] has been called on the signature but even before Save is called on the document).

public bool HasCryptographicSignature()

Public Function HasCryptographicSignature As Boolean

public:
virtual bool HasCryptographicSignature() sealed

function HasCryptographicSignature();