We're sorry Aspose doesn't work properply without JavaScript enabled.

Free Support Forum - aspose.com

Create Bi-directional Table of contents

Hi,


How can I create a Table of Contents that enables to navigate back to the TOC from chapter headings using Aspose.Word?

Thanks

Hi

Thanks for your request. Sure you can achieve this. You should simply insert a bookmark before the TOC and insert headings with link to this bookmark. For instance see the following code:

// Use a blank document

Document doc = new Document();

// Create a document builder to insert content with into document.

DocumentBuilder builder = new DocumentBuilder(doc);

// Insert a bookmark before a TOC.

builder.StartBookmark("toc");

// Insert a table of contents at the beginning of the document.

builder.InsertTableOfContents("\\o \"1-3\" \\h \\z \\u");

builder.EndBookmark("toc");

// Start the actual document content on the second page.

builder.InsertBreak(BreakType.PageBreak);

// Build a document with complex structure by applying different heading styles thus creating TOC entries.

builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading1;

// Insert heading as a hyperlink to bookmark.

builder.InsertHyperlink("Heading 1", "toc", true);

builder.Writeln();

builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading2;

builder.InsertHyperlink("Heading 1.1", "toc", true);

builder.Writeln();

builder.InsertHyperlink("Heading 1.2", "toc", true);

builder.Writeln();

builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading1;

builder.InsertHyperlink("Heading 2", "toc", true);

builder.Writeln();

builder.InsertHyperlink("Heading 3", "toc", true);

builder.Writeln();

builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading2;

builder.InsertHyperlink("Heading 3.1", "toc", true);

builder.Writeln();

builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading3;

builder.InsertHyperlink("Heading 3.1.1", "toc", true);

builder.Writeln();

builder.InsertHyperlink("Heading 3.1.2", "toc", true);

builder.Writeln();

builder.InsertHyperlink("Heading 3.1.3", "toc", true);

builder.Writeln();

builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading2;

builder.InsertHyperlink("Heading 3.2", "toc", true);

builder.Writeln();

builder.InsertHyperlink("Heading 3.3", "toc", true);

builder.Writeln();

// Call the method below to update the TOC.

doc.UpdateFields();

doc.Save(@"Test001\out.doc");

Hope this helps.

Best regards,

Hi,


Thanks for the reply. In the example you have created new hyperlinks. My requirement is slightly different. I have to convert an existing Run into a hyperlink that can point back to the TOC. So how can I convert a Run to hyperlink without losing any style information?

Thanks

Hi

Thanks for your request. I created a simple code for you:

[Test]

public void Test001()

{

// Open document.

Document doc = new Document(@"Test001\in.docx");

// Create DocumentBuilder and insert a bookmark at the begginign of the document.

// This bookmark will be the point our hyperlinks will follow to.

DocumentBuilder builder = new DocumentBuilder(doc);

const string bookmarkName = "start";

builder.StartBookmark(bookmarkName);

builder.EndBookmark(bookmarkName);

// Now get all paragraphs and replace heading paragraphs with hyperlinks to the inserted bookmark.

NodeCollection paragraphs = doc.GetChildNodes(NodeType.Paragraph, true);

foreach (Paragraph paragraph in paragraphs)

{

if(paragraph.ParagraphFormat.StyleIdentifier == StyleIdentifier.Heading1 ||

paragraph.ParagraphFormat.StyleIdentifier == StyleIdentifier.Heading2 ||

paragraph.ParagraphFormat.StyleIdentifier == StyleIdentifier.Heading3)

{

ParagraphToHyperlink(paragraph, bookmarkName, true);

}

}

// Save output

doc.Save(@"Test001\out.docx");

}

///

/// Replaces paragraph's content. Paragraph's text is used as displayed text of hyperlink.

///

///

private void ParagraphToHyperlink(Paragraph paragraph, string hyperlink, bool isBookmark)

{

// Create DocumentBuilder that will allow us to insert Hyperlink.

DocumentBuilder builder =new DocumentBuilder((Document)paragraph.Document);

// Move DocumentBuilder's cursor to the paragraph.

builder.MoveTo(paragraph);

// Insert Hyperlink field.

Field hyperlinkField = builder.InsertField(string.Format("HYPERLINK {1} \"{0}\"", hyperlink, isBookmark ? "\\l" : ""), "");

// Move all content of the paragraph into the fireld values (between field separator and field end).

while (!paragraph.FirstChild.Equals(hyperlinkField.Start))

{

paragraph.InsertAfter(paragraph.FirstChild, hyperlinkField.Separator);

}

}

Hope it helps.

Best regards,