In real-world scenarios, users manage several DOT templates for reports, letters, or standardized forms. Over time, combining these templates into a single reference file becomes necessary for easier access and centralized management. Using a .NET REST API, it is possible to join multiple DOT files without relying on manual copy-paste methods or desktop software. This is helpful for organizations that want to reduce repetitive work while keeping document structures intact. In this article, you’ll learn how to merge DOT files in C# applications and simplify document handling while optimizing your document workflows.

Steps to Merge DOT 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 DOT files to merge
5. Define the merging options using JoinOptions
6. Process the request to merge two DOT files with the join() method

These straightforward steps define a process that runs through REST-based requests, allowing it to be triggered from web apps, background services, or desktop tools without any dependencies. Merging DOT files with the Cloud API eliminates many common obstacles tied to traditional document processing. Additionally, the same workflow can be used across Windows, Linux, and macOS environments. It enables combining DOT files into a unified document, making it suitable for managing document templates. Your document merger applications can help reduce errors, maintain consistency, and improve overall document reliability.

Code to Merge DOT Files in C# .NET

If you want to merge DOT files within your C#, VB.NET, or ASP.NET solutions programmatically, the GroupDocs.Merger Cloud .NET SDK is exactly what you need. It supports cleaner workflows, easier template reuse, and smoother collaboration across teams. Developers can utilize our .NET REST API in small utilities or full-spectrum document systems. The DOT file merger functionality keeps document operations organized and future-ready, while maintaining template integrity.

To learn about more document automation scenarios, please review our guide to Merging ODS files using the .NET REST API.