Working with digital documents in .NET often requires assembling content from multiple sources into one unified file. If your applications handle page-based content, you’ll frequently need to merge XPS files—especially while archiving records, preparing reports, or consolidating generated print-ready pages. This guide explains how developers can automate XPS file merging in C# applications using the .NET REST API to replace the manual document management workflow. Let’s dive in!

Steps to Merge XPS Files in C# .NET

1. Install GroupDocs.Merger Cloud SDK for .NET from NuGet
2. Set up your client credentials with the Configuration class
3. Instantiate an object of the DocumentApi class
4. Configure the source XPS files to merge
5. Define the merging options using JoinOptions
6. Process the request to merge two XPS files with the join() method

These steps showcase how easily you can join XPS documents in C# without building a custom rendering engine. Because the entire workflow runs on the server side, your application doesn’t need additional third-party libraries or performance-heavy file processing logic. Simply integrate the Cloud REST API, pass your input files, and receive a merged XPS output ready for distribution and collaboration. Thanks to the REST API’s cross-platform support, your applications run seamlessly across multiple environments.

Code to Merge XPS Files in C# .NET

The GroupDocs.Merger Cloud .NET SDK is a reliable, developer-friendly solution for programmatically combining XPS documents in C#, VB.NET, or ASP.NET apps. With minimal code, you can simplify document manipulation workflows, boost automation, and eliminate errors caused by manual merging. Build enterprise document systems, automation tools, or content generation services; our .NET REST API enables the integration of XPS merging capabilities to deliver faster and more efficient results.

Discover more file processing options by reviewing our article on Merging EPUB Files Using the .NET REST API.