// -------------------- IterateSignatureDefinitions --------------------
/// <summary>
/// Interates through the SignatureDefinition contained in a given
/// XPS document displaying and updating the signature properties
/// through a user dialog.</summary>
/// <param name="signatureDialog">
/// The user dialog to use in displaying and
/// updating the signature information.</param>
/// <param name="xpsDocument">
/// The XPS document containing the signature information.</param>
public void IterateSignatureDefinitions(
SignatureDialog signatureDialog, XpsDocument xpsDocument)
{
IXpsFixedDocumentSequenceReader docSeq =
xpsDocument.FixedDocumentSequenceReader;
// For every FixedDocument in the XPS document.
foreach (IXpsFixedDocumentReader doc in docSeq.FixedDocuments)
{
// For every SignatureDefinition in each FixedDocument.
foreach (XpsSignatureDefinition signature in
doc.SignatureDefinitions)
{
SignatureDisplayItem item =
signatureDialog.AddSignatureItem(signature);
// Signatures are bound to signature definitions by GUID.
// If the SignatureDefintion SpotId is the same as the
// SignatureId, the signature is signing that definition.
// For every signature in the XPS document.
foreach (XpsDigitalSignature sig in xpsDocument.Signatures)
{
if (sig.Id != null && sig.Id == signature.SpotId)
{
X509Certificate2 cert =
sig.SignerCertificate as X509Certificate2;
item.Signer =
cert.GetNameInfo(X509NameType.SimpleName, false);
item.IsSigned = true;
}
} // end:foreach (XpsDigitalSignature
} // end:foreach (XpsSignatureDefinition
} // end:foreach (IXpsFixedDocumentReader
} // end:IterateSignatureDefinitions()
public SignatureDisplayItem AddSignatureItem(XpsSignatureDefinition signatureDefintion)
{
SignatureDisplayItem item = new SignatureDisplayItem();
if (signatureDefintion != null)
{
item.Request = signatureDefintion.RequestedSigner;
item.Intent = signatureDefintion.Intent;
item.SignBy = signatureDefintion.SignBy.ToString();
item.Location = signatureDefintion.SigningLocale;
item.SigId = signatureDefintion.SpotId;
}
this.SignatureList.Items.Add(item);
return(item);
}
} // end:IterateSignatureDefinitions()
// ------------------------- IterateSignatures ------------------------
/// <summary>
/// Interates through signatures that are not associated with
/// a SignatureDefinition.</summary>
/// <param name="signatureDialog">
/// The user dialog to use in displaying and
/// updating the signature information.</param>
/// <param name="xpsDocument">
/// The XPS document containing the signature information.</param>
public void IterateSignatures(
SignatureDialog signatureDialog, XpsDocument xpsDocument)
{
bool found = false;
IXpsFixedDocumentSequenceReader docSeq =
xpsDocument.FixedDocumentSequenceReader;
// For every signature in the XPS document.
foreach (XpsDigitalSignature sig in xpsDocument.Signatures)
{
found = false;
// For every FixedDocument in the XPS document.
foreach (IXpsFixedDocumentReader doc in docSeq.FixedDocuments)
{
// For every SignatureDefinition in each FixedDocument.
foreach (XpsSignatureDefinition signature in
doc.SignatureDefinitions)
{
if (sig.Id != null && sig.Id == signature.SpotId)
{
found = true;
break;
}
}//end:foreach (XpsSignatureDefinition
if (found)
{
break;
}
}// end:foreach (IXpsFixedDocument
if (!found)
{
SignatureDisplayItem item =
signatureDialog.AddSignatureItem(null);
X509Certificate2 cert =
sig.SignerCertificate as X509Certificate2;
item.Signer =
cert.GetNameInfo(X509NameType.SimpleName, false);
item.IsSigned = true;
}
} // end:foreach (XpsDigitalSignature
} // end:IterateSignatures()
private void SignCommandHandler(object sender, RoutedEventArgs e)
{
SignatureDisplayItem item = SignatureList.SelectedItem as SignatureDisplayItem;
if (item != null && item.IsSigned)
{
System.Windows.MessageBox.Show("This definition is already signed.");
return;
}
X509Certificate cert = PromptForSignature();
if (cert != null)
{
Guid?spotID = null;
if (item != null)
{
spotID = item.SigId;
}
_signatureUtilities.SignXps(_xpsDocument, cert, spotID);
InitializeSignatureDisplay();
}
}
