How can Word document be converted to a PDF using Mail Merge in ASP.NET Core?

Mail merge is a process of merging data from a data source to a Word template document. Syncfusion Essential DocIO Renderer is a .NET Core Word to PDF conversion library (Essential DocIO and Essential PDF) used to create mail merge Word documents and convert it to PDF in an ASP.NET Core application [C#].

Steps to Mail merge Word document and convert it as PDF

1. Create a new C# .NET Core console application.
2. Install the Syncfusion.DocIORenderer.NET.Core NuGet package as a reference to your ASP.NET Core application from NuGet.org.
3. Include the following namespaces in the Program.cs file:

   using Syncfusion.DocIO;
   using Syncfusion.DocIO.DLS;
   using Syncfusion.DocIORenderer;
   using Syncfusion.Pdf;
   using System.IO;
   

4. Use the following code snippet to create a mail merge Word document and convert the Word document to PDF:

   // Opens the Word template document
   FileStream fileStreamPath = new FileStream(@"Data/Letter Formatting.docx", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
   using (WordDocument document = new WordDocument(fileStreamPath, FormatType.Docx))
   {
     string[] fieldNames = { "ContactName", "CompanyName", "Address", "City", "Country", "Phone" };
     string[] fieldValues = { "Nancy Davolio", "Syncfusion", "507 - 20th Ave. E.Apt. 2A", "Seattle, WA", "USA", "(206) 555-9857-x5467" };
     // Performs the mail merge
     document.MailMerge.Execute(fieldNames, fieldValues);
     // Create an instance for DocIORenderer for Word to PDF conversion
     DocIORenderer render = new DocIORenderer();
     // Converts Word document to PDF
     PdfDocument pdfDocument = render.ConvertToPDF(document);
     // Release the resources used by the Word document and DocIO Renderer objects.
     render.Dispose();
     document.Dispose();
     // Saves the PDF file
     FileStream outputStream = new FileStream(@"Output.pdf", FileMode.CreateNew, FileAccess.Write);
     pdfDocument.Save(outputStream);
     // Closes the instance of the PDF document object
     pdfDocument.Close();
     // Dispose the instance of FileStream
     outputStream.Dispose();
   }
   

A complete working example of how to create a Mail merge Word document and convert the Word document to PDF using the .NET Core Word library can be downloaded from Mail-merged-Word-into-PDF.Zip.

By executing the example program, you will get the PDF document as like below.

Take a moment to peruse the documentation, where you can find basic Word document processing options along with features like mail merge, merge and split documents, find and replace text in the Word document, and most importantly, PDF conversion with code examples.

Explore more about the rich set of Syncfusion Word Framework features.

An online example to perform mail merge in Word document and convert Word document to PDF in ASP.NET Core Web application.

See Also:

Mail Merge Word document in ASP.NET Core

Convert Word document to PDF in ASP.NET Core

Note:

Starting with v16.2.0.x, if you reference Syncfusion assemblies from a trial setup or from the NuGet feed, include a license key in your projects. Refer to the link to learn about generating and registering the Syncfusion license key in your application to use the components without a trial message.