Use DocumentBuilder to inserting a Table of Contents within C# and .NET


   The TOC (Table of Contents) field builds a table of contents. The TOC field collects entries for a table of contents using heading styles, other specified styles, outline levels, captions, or entries specified by TC (Table of Contents Entry) fields. Use DocumentBuilderInsertTableOfContents method to insert a TOC (table of contents) field into the document at the current position.
To build a table of contents and display it according to page numbers, call the TableOfEntriesUpdate method.

Complete code

using System;
using SautinSoft.Document;
using System.Text;

namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
            // Get your free 30-day key here:   
            // https://sautinsoft.com/start-for-free/
            InsertingToc();
        }
        /// <summary>
        /// Insert a TOC (Table of Contents) field into the document using DocumentBuilder.
        /// </summary>
        /// <remarks>
        /// Details: https://www.sautinsoft.com/products/document/help/net/developer-guide/documentbuilder-inserting-toc.php
        /// </remarks>

        static void InsertingToc()
        {
            DocumentCore dc = new DocumentCore();
            DocumentBuilder db = new DocumentBuilder(dc);

            // Insert the formatted text into the document using DocumentBuilder.
            db.CharacterFormat.FontName = "Verdana";
            db.CharacterFormat.Size = 16;
            db.Writeln("Table of Contents.");
            db.CharacterFormat.ClearFormatting();

            // Insert Table of Contents field into the document at the current position.
            TableOfEntries toe = db.InsertTableOfContents("\\o \"1-3\" \\h");
            // For information about switches, see the description on the page above.

            // Add the text and divide it into headings.
            db.InsertSpecialCharacter(SpecialCharacterType.PageBreak);
            ParagraphStyle Heading1Style = (ParagraphStyle)Style.CreateStyle(StyleTemplateType.Heading1, dc);
            dc.Styles.Add(Heading1Style);
            db.ParagraphFormat.Style = Heading1Style;
            db.Writeln("Heading 1");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1" +
                "Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 ");

            ParagraphStyle Heading2Style = (ParagraphStyle)Style.CreateStyle(StyleTemplateType.Heading2, dc);
            dc.Styles.Add(Heading2Style);
            db.ParagraphFormat.Style = Heading2Style;
            db.Writeln("Heading 1.1");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1" +
                " Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1");
            db.ParagraphFormat.Style = Heading2Style;
            db.Writeln("Heading 1.2");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2" +
                " Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2 ");

            ParagraphStyle Heading3Style = (ParagraphStyle)Style.CreateStyle(StyleTemplateType.Heading3, dc);
            dc.Styles.Add(Heading3Style);
            db.ParagraphFormat.Style = Heading3Style;
            db.Writeln("Heading 1.1.1");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 1.1.1 Some text Heading 1.1.1 Some text Heading 1.1.1 Some text Heading 1.1.1 " +
                " Some text Heading 1.1.1 Some text Heading 1.1.1 Some text Heading 1.1.1 ");
            db.ParagraphFormat.Style = Heading3Style;
            db.Writeln("Heading 1.1.2");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text 1.1.2 Some text 1.1.2 Some text 1.1.2 Some text 1.1.2");

            db.ParagraphFormat.Style = Heading1Style;
            db.Writeln("Heading 2");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 2 Some text Heading 2.");

            db.ParagraphFormat.Style = Heading1Style;
            db.Writeln("Heading 3");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 3 Some text Heading 3 Some text Heading 3 Some text Heading 3 Some text Heading 3" +
                 "Some text Heading 3Some text Heading 3Some text Heading 3Some text Heading 3Some text Heading 3");

            db.ParagraphFormat.Style = Heading2Style;
            db.Writeln("Heading 3.1");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1" +
               "Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1");
            
            db.ParagraphFormat.Style = Heading2Style;
            db.Writeln("Heading 3.2");
            db.ParagraphFormat.ClearFormatting();
            db.Writeln("Some text Heading 3.2 Some text Heading 3.2 Some text Heading 3.2 Some text Heading 3.2 Some text Heading 3.2");

            // Update the TOC field (table of contents).
            toe.Update();

            // Save our document into DOCX format.
            string resultPath = @"Result.docx";
            dc.Save(resultPath, new DocxSaveOptions());

            // Open the result for demonstration purposes.
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(resultPath) { UseShellExecute = true });
        }
    }
}

Download

Imports System
Imports SautinSoft.Document
Imports System.Text

Namespace Example
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			InsertingToc()
		End Sub
                ''' Get your free 30-day key here:   
                ''' https://sautinsoft.com/start-for-free/
		''' <summary>
		''' Insert a TOC (Table of Contents) field into the document using DocumentBuilder.
		''' </summary>
		''' <remarks>
		''' Details: https://www.sautinsoft.com/products/document/help/net/developer-guide/documentbuilder-inserting-toc.php
		''' </remarks>

		Private Shared Sub InsertingToc()
			Dim dc As New DocumentCore()
			Dim db As New DocumentBuilder(dc)

			' Insert the formatted text into the document using DocumentBuilder.
			db.CharacterFormat.FontName = "Verdana"
			db.CharacterFormat.Size = 16
			db.Writeln("Table of Contents.")
			db.CharacterFormat.ClearFormatting()

			' Insert Table of Contents field into the document at the current position.
			Dim toe As TableOfEntries = db.InsertTableOfContents("\o ""1-3"" \h")
			' For information about switches, see the description on the page above.

			' Add the text and divide it into headings.
			db.InsertSpecialCharacter(SpecialCharacterType.PageBreak)
			Dim Heading1Style As ParagraphStyle = CType(Style.CreateStyle(StyleTemplateType.Heading1, dc), ParagraphStyle)
			dc.Styles.Add(Heading1Style)
			db.ParagraphFormat.Style = Heading1Style
			db.Writeln("Heading 1")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1" & "Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 Some text Heading 1 ")

			Dim Heading2Style As ParagraphStyle = CType(Style.CreateStyle(StyleTemplateType.Heading2, dc), ParagraphStyle)
			dc.Styles.Add(Heading2Style)
			db.ParagraphFormat.Style = Heading2Style
			db.Writeln("Heading 1.1")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1" & " Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1 Some text Heading 1.1")
			db.ParagraphFormat.Style = Heading2Style
			db.Writeln("Heading 1.2")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2" & " Some text Heading 1.2 Some text Heading 1.2 Some text Heading 1.2 ")

			Dim Heading3Style As ParagraphStyle = CType(Style.CreateStyle(StyleTemplateType.Heading3, dc), ParagraphStyle)
			dc.Styles.Add(Heading3Style)
			db.ParagraphFormat.Style = Heading3Style
			db.Writeln("Heading 1.1.1")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 1.1.1 Some text Heading 1.1.1 Some text Heading 1.1.1 Some text Heading 1.1.1 " & " Some text Heading 1.1.1 Some text Heading 1.1.1 Some text Heading 1.1.1 ")
			db.ParagraphFormat.Style = Heading3Style
			db.Writeln("Heading 1.1.2")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text 1.1.2 Some text 1.1.2 Some text 1.1.2 Some text 1.1.2")

			db.ParagraphFormat.Style = Heading1Style
			db.Writeln("Heading 2")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 2 Some text Heading 2.")

			db.ParagraphFormat.Style = Heading1Style
			db.Writeln("Heading 3")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 3 Some text Heading 3 Some text Heading 3 Some text Heading 3 Some text Heading 3" & "Some text Heading 3Some text Heading 3Some text Heading 3Some text Heading 3Some text Heading 3")

			db.ParagraphFormat.Style = Heading2Style
			db.Writeln("Heading 3.1")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1" & "Some text Heading 3.1 Some text Heading 3.1 Some text Heading 3.1")

			db.ParagraphFormat.Style = Heading2Style
			db.Writeln("Heading 3.2")
			db.ParagraphFormat.ClearFormatting()
			db.Writeln("Some text Heading 3.2 Some text Heading 3.2 Some text Heading 3.2 Some text Heading 3.2 Some text Heading 3.2")

			' Update the TOC field (table of contents).
			toe.Update()

			' Save our document into DOCX format.
			Dim resultPath As String = "result.docx"
			dc.Save(resultPath, New DocxSaveOptions())

			' Open the result for demonstration purposes.
			System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(resultPath) With {.UseShellExecute = True})
		End Sub
	End Class
End Namespace

Download


If you need a new code example or have a question: email us at support@sautinsoft.com or ask at Online Chat (right-bottom corner of this page) or use the Form below:



Questions and suggestions from you are always welcome!

We are developing .Net components since 2002. We know PDF, DOCX, RTF, HTML, XLSX and Images formats. If you need any assistance with creating, modifying or converting documents in various formats, we can help you. We will write any code example for you absolutely free.