Aspose::Cells::DigitalSignatures::DigitalSignatureCollection class

DigitalSignatureCollection class

Provides a collection of digital signatures attached to a document.

class DigitalSignatureCollection

Methods

Method	Description
Add(const DigitalSignature& digitalSignature)	Add one signature to DigitalSignatureCollection.
begin()	Returns an iterator to the beginning of the DigitalSignatureCollection.
DigitalSignatureCollection()	The constructor of DigitalSignatureCollection.
DigitalSignatureCollection(DigitalSignatureCollection_Impl* impl)	Constructs from an implementation object.
DigitalSignatureCollection(const DigitalSignatureCollection& src)	Copy constructor.
end()	Returns an iterator to the end of the DigitalSignatureCollection.
GetEnumerator()	Get the enumerator for DigitalSignatureCollection, this enumerator allows iteration over the collection.
IsNull() const	Checks whether the implementation object is nullptr.
explicit operator bool() const	operator bool()
operator=(const DigitalSignatureCollection& src)	operator=
~DigitalSignatureCollection()	Destructor.

Fields

Field	Description
_impl	The implementation object.

Examples

Aspose::Cells::Startup();
//The following example shows how to validate digital signature.
//workbook from a signed source file
Workbook signedWorkbook(u"signedFile.xlsx");
//wb.IsDigitallySigned is true when the workbook is signed already.
std::cout<<signedWorkbook.IsDigitallySigned() << std::endl;
//get digitalSignature collection from workbook
DigitalSignatureCollection existingDsc = signedWorkbook.GetDigitalSignature();
Enumerator<DigitalSignature> en = existingDsc.GetEnumerator();
while (en.MoveNext())
{
    DigitalSignature existingDs = (DigitalSignature)en.GetCurrent();
    std::cout << "existingDs.Comments : " << existingDs.GetComments().ToUtf8() << std::endl;
    Date dt = existingDs.GetSignTime();
    std::cout << "existingDs.SignTime : " << dt.year << "-" << dt.month << "-" << dt.day << " " << dt.hour << ":" << dt.minute << ":" << dt.second << std::endl;
    std::cout << "existingDs.IsValid = " << (existingDs.IsValid() ? "True" : "False") << std::endl;
}

Aspose::Cells::Cleanup();

See Also

• Namespace Aspose::Cells::DigitalSignatures
• Library Aspose.Cells for C++