When working with multiple presentations in a collaborative environment, managing content contributions from several users can quickly become overwhelming. Although OpenDocument Presentation (ODP) files are popular in open-source and cross-platform environments, handling many of them individually can be time-consuming. However, bringing multiple ODP presentations together into a single file makes sharing and reviewing much easier. In this guide, you’ll learn how to merge ODP files in C# applications and streamline workflows using the .NET REST API.

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

With these simple steps, merging ODP files in a .NET app follows a straightforward process. The REST API helps preserve slide layouts, formatting, and visual consistency across presentations. This workflow is useful when multiple decks cover related topics, such as training materials, project updates, or academic presentations. Users can access everything in a unified presentation. Another big advantage is automation: instead of copying slides one by one, multiple ODP files can be combined programmatically with minimal setup. Therefore, while manipulating presentations for reporting or internal documentation, automating ODP file merging saves time and minimizes human error.

Code to Merge ODP Files in C# .NET

This article explains the step-by-step process of joining multiple ODP files in C#, VB.NET, and ASP.NET apps seamlessly using the GroupDocs.Merger Cloud .NET SDK. It enables developers to merge ODP files with the robust .NET REST API. By automating the process, your cross-platform applications can combine two or more OpenDocument presentations into a single, organized document without complex file handling logic. As a result, users find it easier to maintain content, improve collaboration, and keep presentation assets tidy across platforms.

If you’re interested in combining other document types, please refer to our guide on Merging XLS files using the .NET REST API.