Create Word Documents with Mail Merge in C#

Streamline your Word document creation process by programmatically generating Word files using Mail Merge technology. The C# API handles all aspects of the Mail Merge operation, helping you save time and ensure maximum accuracy in your results.

Key Features

Generation of Word documents based on templates with Merge Field support.
Dynamic content insertion, including text, tables, images, and form fields in output Word files.

Use Cases

Business Word Documents. Create contracts, proposals, or agreements in Word format with client-specific information.
Personalized Word Reports. Create customized Word reports by combining data from databases or other sources.
Batch Processing of Word Files. Automatically create hundreds of Word files from a single template with different data sets.

By integrating Wordize Mail Merge capabilities into your .NET projects, developers can create professional solutions for Word document generation and automation. Install our library to try the capabilities of generating customized Word documents in your C# software today.

Run code

Upload your document template

Upload your data source (XML, JSON, CSV)

Select the target format from the list

 
				
				
		
using System.Data;
using Newtonsoft.Json;
using Wordize.MailMerging;

string json = File.ReadAllText("DataSource.json");
DataTable dataTable = JsonConvert.DeserializeObject(json);
MailMerger.Execute("Input.docx", "Output.docx", SaveFormat.Docx, dataTable);

										using System.Data;
using Newtonsoft.Json;
using Wordize.MailMerging;

string json = File.ReadAllText("DataSource.json");
DataTable dataTable = JsonConvert.DeserializeObject(json);
MailMerger.Execute("Input.docx", "Output.docx", SaveFormat.Docx, dataTable);

										using System.Data;
using Newtonsoft.Json;
using Wordize.MailMerging;
using Wordize.Saving;

string json = File.ReadAllText("DataSource.json");
DataTable dataTable = JsonConvert.DeserializeObject(json);
var imageStreams = MailMerger.Execute("Input.docx", new ImageSaveOptions(SaveFormat.Docx),  dataTable);

foreach (var (stream, page) in imageStreams.Select((s, i) => (s, i)))
{
    using var _ = stream;
    stream.Position = 0;
    
    using var file = File.Create($"Output_{page + 1}.docx");
    stream.CopyTo(file);
}

					
using System.Data;
using Wordize.MailMerging;

DataSet dataSet = new DataSet();
dataSet.ReadXml("DataSource.xml");
MailMerger.Execute("Input.docx", "Output.docx", SaveFormat.Docx, dataSet.Tables[0]);

										using System.Data;
using Wordize.MailMerging;

DataSet dataSet = new DataSet();
dataSet.ReadXml("DataSource.xml");
MailMerger.Execute("Input.docx", "Output.docx", SaveFormat.Docx, dataSet.Tables[0]);

										using System.Data;
using Wordize.MailMerging;
using Wordize.Saving;

DataSet dataSet = new DataSet();
dataSet.ReadXml("DataSource.xml");
var imageStreams = MailMerger.Execute("Input.docx", new ImageSaveOptions(SaveFormat.Docx),  dataSet.Tables[0]);

foreach (var (stream, page) in imageStreams.Select((s, i) => (s, i)))
{
    using var _ = stream;
    stream.Position = 0;
    
    using var file = File.Create($"Output_{page + 1}.docx");
    stream.CopyTo(file);
}

					

				Run code
			

How to generate Word files in C# using Mail Merge

Install the C# library for generating Word files using Mail Merge technology
Add a reference to the library (import the library) in your C# project
Call the MailMerge method to generate Word through Mail Merge