public void Clear()
{
_resultText = null;
if (_signature != null)
{
_signature.Clear();
}
if (_subject != null)
{
_subject.Clear();
}
if (_certificates != null)
{
_certificates.Clear();
}
OnPropertyChanged("ResultText");
OnPropertyChanged("Signature");
OnPropertyChanged("Subject");
OnPropertyChanged("Certs");
}
