GrapeCity.Documents.Excel.ISignature.IsValid

IsValid Property

Determines if the digital signature that corresponds to the ISignature object is a valid signature.

This value is true only when the signature has been signed and the signature is considered valid for the current workbook.

bool IsValid { get; }

ReadOnly Property IsValid As Boolean

ISignature signature = workbook.Signatures.AddSignatureLine(worksheet, 100.0, 50.0);
bool isValid = signature.IsValid;