Table of Contents

Author: Konduru Keerthi Konduru Ravichandra Raju

Table-Of-Contents/Add_toc_in_merged_documents/.NET/Add_toc_in_merged_documents.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.34928.147
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Add_toc_in_merged_documents", "Add_toc_in_merged_documents\Add_toc_in_merged_documents.csproj", "{78D9D0A1-4467-4A3C-8C45-3F90EE69EC36}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{78D9D0A1-4467-4A3C-8C45-3F90EE69EC36}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{78D9D0A1-4467-4A3C-8C45-3F90EE69EC36}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{78D9D0A1-4467-4A3C-8C45-3F90EE69EC36}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{78D9D0A1-4467-4A3C-8C45-3F90EE69EC36}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {CF8B010D-A0FC-4D30-8767-8B601222372E}
+	EndGlobalSection
+EndGlobal

Table-Of-Contents/Add_toc_in_merged_documents/.NET/Add_toc_in_merged_documents/Add_toc_in_merged_documents.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.DocIO.Net.Core" Version="*" />
+    <PackageReference Include="Syncfusion.DocIORenderer.Net.Core" Version="*" />
+  </ItemGroup>
+
+</Project>

Table-Of-Contents/Add_toc_in_merged_documents/.NET/Add_toc_in_merged_documents/Data/Document1.docx

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+using Syncfusion.DocIO.DLS;
+using Syncfusion.DocIO;
+using Syncfusion.DocIORenderer;
+
+//Get the Source document names from the folder.
+string[] sourceDocumentNames = Directory.GetFiles(@"../../../Data/");
+
+//Create an WordDocumentinstance for destination document.
+using (WordDocument destinationDocument = new WordDocument())
+{
+    //Add an section and paragraph to the destination document.
+    IWSection section = destinationDocument.AddSection();
+    IWParagraph paragraph = section.AddParagraph();
+    //Appends the TOC field with LowerHeadingLevel and UpperHeadingLevel to determines the TOC entries.
+    paragraph.AppendTOC(1, 3);
+
+    //Merge each source document to the destination document.
+    foreach (string subDocumentName in sourceDocumentNames)
+    {
+        //Open the source document files as a stream.
+        using (FileStream sourceDocumentPathStream = new FileStream(Path.GetFullPath(subDocumentName), FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+        {
+            //Open the source documents.
+            using (WordDocument sourceDocument = new WordDocument(sourceDocumentPathStream, FormatType.Docx))
+            {
+                //Sets the break-code of First section of source document as NoBreak to avoid imported from a new page
+                sourceDocument.Sections[0].BreakCode = SectionBreakCode.NoBreak;
+                //Imports the contents of source document at the end of destination document
+                destinationDocument.ImportContent(sourceDocument, ImportOptions.UseDestinationStyles);
+            }
+        }
+    }
+
+    //Updates the table of contents
+    destinationDocument.UpdateTableOfContents();
+    //Save the destination document.
+    using (FileStream outputStream = new FileStream(@"../../../Output.docx", FileMode.Create, FileAccess.Write))
+    {
+        destinationDocument.Save(outputStream, FormatType.Docx);
+    }
+}