public void CreateForm()
{
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(FORM));
Document doc = new Document(pdfDoc);
Table table = new Table(1).UseAllAvailableWidth();
table.AddCell("Written by Alice");
table.AddCell(CreateSignatureFieldCell("sig1", null));
table.AddCell("For approval by Bob");
table.AddCell(CreateTextFieldCell("approved_bob"));
PdfSigFieldLock Lock = new PdfSigFieldLock().SetFieldLock(PdfSigFieldLock.LockAction.INCLUDE,
"sig1", "approved_bob", "sig2");
table.AddCell(CreateSignatureFieldCell("sig2", Lock));
table.AddCell("For approval by Carol");
table.AddCell(CreateTextFieldCell("approved_carol"));
Lock = new PdfSigFieldLock().SetFieldLock(PdfSigFieldLock.LockAction.EXCLUDE,
"approved_dave", "sig4");
table.AddCell(CreateSignatureFieldCell("sig3", Lock));
table.AddCell("For approval by Dave");
table.AddCell(CreateTextFieldCell("approved_dave"));
Lock = new PdfSigFieldLock().SetDocumentPermissions(PdfSigFieldLock.LockPermissions.NO_CHANGES_ALLOWED);
table.AddCell(CreateSignatureFieldCell("sig4", Lock));
doc.Add(table);
doc.Close();
}
protected static Cell CreateSignatureFieldCell(String name, PdfSigFieldLock Lock)
{
Cell cell = new Cell();
cell.SetHeight(50);
cell.SetNextRenderer(new SignatureFieldCellRenderer(cell, name, Lock));
return(cell);
}
public SignatureFieldCellRenderer(Cell modelElement, String name, PdfSigFieldLock Lock)
: base(modelElement)
{
this.name = name;
this.Lock = Lock;
}