Use Aspose Word in C# to insert the title table of contents and use the title style to insert the title

Use Aspose Word in C# to insert titles and use title styles to insert titles
Some properties of StyleIdentifier can be found in this article
https://blog.csdn.net/QH2107/article/details/129988814

 public static void TestAspose()
        {
    
    
            Document doc = new Document();
            DocumentBuilder builder = new DocumentBuilder(doc);

            // Insert a table of contents at the beginning of the document.
            builder.InsertTableOfContents("\\o \"1-3\" \\h \\z \\u");

            // 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.Title;

            builder.Writeln("Heading 1");

            builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading2;

            builder.Writeln("Heading 1.1");
            builder.Writeln("Heading 1.2");

            builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading1;

            builder.Writeln("Heading 2");
            builder.Writeln("Heading 3");

            builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading2;

            builder.Writeln("Heading 3.1");

            builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Title;

            builder.Writeln("Heading 3.1.1");
            builder.Writeln("Heading 3.1.2");
            builder.Writeln("Heading 3.1.3");

            builder.ParagraphFormat.StyleIdentifier = StyleIdentifier.Heading2;

            builder.Writeln("Heading 3.2");
            builder.Writeln("Heading 3.3");

            doc.UpdateFields();
            String dataDir = "SaveDir" + "\\DocumentBuilderInsertTableOfContents_out.doc";
            doc.Save(dataDir);

       }

The result of the code above

first page

second page