Unlink if fields

[malkyod]

I am using the DocumentVisitor functionality to remove all fields from my documents(see below). There are some nested fields in my document that are not being unlinked properly. How can I properly unlink nested fields?

The field code in my original document is: {IF {DOCPROPERTY "~V_02"} = "1" "A" "B"}

In my document after applying the RemoveFields class below the field reads: {IF = "1" "A" "B"}

I would like my final document to say just : A or B with the field being unlinked

(I also tried another method to unlink the fields(see code below) which produced the same results.

How would I do this correctly?

• public class RemoveFields : DocumentVisitor
• {
• private bool _delete = false;
• public override VisitorAction VisitFieldStart(Aspose.Words.Fields.FieldStart fieldStart)
• {
• if (fieldStart.FieldType == FieldType.FieldDocProperty || fieldStart.FieldType == FieldType.FieldCreateDate)
• {
• _delete = true;
• fieldStart.Remove();
• }
• return VisitorAction.Continue;
• }
• public override VisitorAction VisitFieldSeparator(Aspose.Words.Fields.FieldSeparator fieldSeparator)
• {
• if (fieldSeparator.FieldType == FieldType.FieldDocProperty || fieldSeparator.FieldType == FieldType.FieldCreateDate)
• {
• _delete = false;
• fieldSeparator.Remove();
• }
• return VisitorAction.Continue;
• }
• public override VisitorAction VisitFieldEnd(Aspose.Words.Fields.FieldEnd fieldEnd)
• {
• if (fieldEnd.FieldType == FieldType.FieldDocProperty || fieldEnd.FieldType == FieldType.FieldCreateDate)
• {
• _delete = false;
• fieldEnd.Remove();
• }
• return VisitorAction.Continue;
• }
• public override VisitorAction VisitRun(Run run)
• {
• if (_delete)
• run.Remove();
• return VisitorAction.Continue;
• }
• }

I also tried the following code, which produces the same result:

• private static void UnlinkFields(Document doc)
• {
• ArrayList propertyStarts = new ArrayList();
• NodeCollection starts = doc.GetChildNodes(NodeType.FieldStart, true);
• foreach (FieldStart start in starts)
• {
• if (start.FieldType == FieldType.FieldDocProperty)
• {
• propertyStarts.Add(start);
• }
• }
• foreach (FieldStart start in propertyStarts)
• {
• Node currentNode = start;
• Node fieldSeparator = null;
• while (currentNode.NodeType != NodeType.FieldSeparator && currentNode.NodeType != NodeType.FieldEnd)
• {
• currentNode = currentNode.NextSibling;
• currentNode.PreviousSibling.Remove();
• }
• if (currentNode.NodeType == NodeType.FieldSeparator)
• {
• fieldSeparator = currentNode;
• while (currentNode != null && currentNode.NodeType != NodeType.FieldEnd)
• {
• currentNode = currentNode.NextSibling;
• }
• fieldSeparator.Remove();
• }
• if (currentNode != null)
• currentNode.Remove();
• }
• }

[AndreyN]

Hello Melissa,

<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Thanks for your request. In this case please try using the following code:

// Open document.

Document doc = new Document("in.doc");

RemoveFields rem = new RemoveFields(FieldType.FieldIf);

doc.Accept(rem);

doc.Save("out.doc");

public class RemoveFields : DocumentVisitor

{

private int _level;

private readonly FieldType _removedType;

private bool Delete

{

get { return _level > 0; }

}

public RemoveFields(FieldType type)

{

_removedType = type;

}

public override VisitorAction VisitFieldStart(FieldStart fieldStart)

{

if (fieldStart.FieldType == _removedType)

{

_level++;

fieldStart.Remove();

}

else

{

if (Delete)

fieldStart.Remove();

}

return VisitorAction.Continue;

}

public override VisitorAction VisitFieldSeparator(FieldSeparator fieldSeparator)

{

if (fieldSeparator.FieldType == _removedType)

{

_level--;

fieldSeparator.Remove();

}

else

{

if (Delete)

fieldSeparator.Remove();

}

return VisitorAction.Continue;

}

public override VisitorAction VisitFieldEnd(FieldEnd fieldEnd)

{

if (fieldEnd.FieldType == _removedType)

{

fieldEnd.Remove();

}

else

{

if (Delete)

fieldEnd.Remove();

}

return VisitorAction.Continue;

}

public override VisitorAction VisitRun(Run run)

{

if (Delete)

run.Remove();

return VisitorAction.Continue;

}

public override VisitorAction VisitTableStart(Table table)

{

if (Delete)

table.Remove();

return VisitorAction.Continue;

}

public override VisitorAction VisitParagraphStart(Paragraph paragraph)

{

if (Delete)

paragraph.Remove();

return VisitorAction.Continue;

}

public override VisitorAction VisitSectionEnd(Section section)

{

if (Delete)

{

Section nextSection = (Section)section.NextSibling;

if (nextSection != null)

{

nextSection.PrependContent(section);

section.Remove();

}

}

return VisitorAction.Continue;

}

}

Best regards,