Introduction

PowerPoint presentations are extremely important for business, academia, and professional practices, requiring automation to save time in preparing the presentations. Using C#, software developers can programmatically generate and alter PowerPoint slides by utilizing such libraries as IronPPT, which is an extensive .NET application for dealing with PowerPoint documents independent of using Microsoft Office Interop.

One of the typical requirements is inserting images into PowerPoint slides for reports, data visualization, or branding. IronPPT makes it easy by enabling developers to insert, place, and resize image-specific slides, with ease. This article discusses how to add images to PowerPoint presentations using IronPPT in C#, including setup, implementation, and best practices to make slide customization better.

How to Add an Image to a PowerPoint in C

Create a new visual studio project.
Install the Dot net PowerPoint library IronPPT using NuGet.
Import namespaces.
Create a presentation and Add a blank slide.
Load an image and Set the image size and position.
save the presentation and run the code.

What is IronPPT?

IronPPT is a .NET control designed to generate, edit, and process PowerPoint presentations dynamically. It provides developers with an efficient way to automate PowerPoint processes without Microsoft Office Interop or Microsoft Office being installed. With IronPPT, it is possible to create new presentations, modify slides by adding text, images, charts, and shapes, retrieve data, and save slides as images or PDFs. Its light weight enables it to become the first choice for C# applications in cloud, desktop, and web settings, offering an efficient and high-speed alternative to traditional Office automation.

Features of IronPPT

Create and Modify PowerPoint Presentations
Programmers can author PowerPoint presentations in code or modify existing presentations with IronPPT. It is simple to add, modify, and delete slides programmatically and automate presentation generation for reports, dashboards, and business cases.

Insert and Manage Slide Contents
Insertion and positioning of text, images, shapes, charts, and tables are enabled through IronPPT. Business logo insertion, data graphical representation, or insertion of formatted text onto slides are supported in real time with dynamic content alignment. Position, alignment, and font settings are enabled by the library to enable a professional look.

Image and Media Support
IronPPT offers to add, move, resize, and organize images. It supports a number of image formats such as PNG, JPEG, and BMP that offer flexibility to work with media objects on PowerPoint slides. Besides this image collection, developers can incorporate multimedia objects such as audio and video to facilitate presentations.

Extract and Read Slide Content
Apart from editing PowerPoint slides, IronPPT is also a system capable of reading slide text, images, and other content. This could be useful for utilizing it for instances where PowerPoint contents are to be reviewed or reused, say, for purposes of making summaries or translating contents on slides to another form.

Conversion of PowerPoint to Other Formats
IronPPT can also export PowerPoint slides to other file formats, like PDF and images (PNG, JPEG). Export is used while presenting in a non-PowerPoint environment or when making printable reports.

Create a New Visual Studio Project

Follow the following steps to open a new visual studio project:
Open the Visual Studio IDE. Ensure you have already installed Visual Studio on your computer before opening it.

Launch a New Project:
Select File, New, and then Project.

From the "Create a new project" box, choose your favorite programming language (C#, say) from the left-hand side. Then, choose the "Console App" or "Console App (.NET Core)" template from the set of available project templates. Do fill in the "Name" field to assign a name to your project.

Choose the project's storage location. Click "Create" to begin working on a new Console application project.

Install IronPPT in Visual Studio

To install IronPPT in a C# project, you must install it through NuGet Package Manager in Visual Studio. To install IronPPT, follow these steps:
Install via Package Manager Console
Open Visual Studio and navigate to Tools > NuGet Package Manager > Package Manager Console.
Execute the following command to install IronPPT:

Install-Package IronPPT

once the installation is completed it will be added to the c# application.

Adding an Image to a PowerPoint Slide Using IronPPT

After IronPPT has been installed, you can begin to add images to your PowerPoint presentations. Below is a step-by-step procedure:
Create a New Presentation
To create a new presentation:

using IronPpt;
// Create a new presentation
var presentation = new PresentationDocument();

Create a new Slide
To create a new presentation slide, use the below code.

// Add a blank slide
presentation.AddSlide();

Adds a new slide to a PowerPoint presentation using the IronPPT library. The Presentation object is a placeholder for a file instance of PowerPoint, and AddSlide() returns a new slide with a default layout. Creating a slide is made simpler since developers can programmatically create dynamic slides in batched presentations. It is only after establishing the first slide that other objects can be added to further customize it by adding text, images, charts, and the like. This approach is useful in scenarios where dynamic report generation, data visualization, or automated PowerPoint creation is required using C#.
Insert an Image
To insert an image into the newly created slide use the following code snippet:

// Add slide object
Slide slide = new Slide();
// Add picture frame
Image image = new Image();
image.Height = 200;
image.Width = 300;
image.LoadFromFile("sample.png");
slide.AddImage(image);
presentation.AddSlide(slide);

The following C# code snippet illustrates how to insert an image into a PowerPoint slide with the help of the IronPPT library. A new Slide object is first created using the new Slide(). Next, an Image object is created, and its Height and Width properties are defined as 200 and 300, respectively. The image is loaded from a file called "sample.png" via LoadFromFile(). The slide.AddImage(image) method inserts the image onto the slide. Lastly, presentation.AddSlide(slide) inserts the slide (with the image) into the PowerPoint presentation. This method supports dynamic slide generation with images in automated presentations.
below is the sample image that has been added to the PDF.

To know more about the Ironppt refer to the documentation here.
Save the Presentation
After adding the image, save the PowerPoint file for presentation:

// Save the presentation to a file
presentation.SaveAs("sampleppt.pptx");

This will save the modified presentation to the specified file path.

Full Code example:

using IronPPT;
using IronPPT.Models;
using System.Reflection.Metadata;
IronPPT.License.LicenseKey = "Licence here";
Console.WriteLine("PPT creation process started");
// Create a new presentation
var presentation = new PresentationDocument();
// Add a blank slide
//presentation.AddSlide();
// Add slide object
Slide slide = new Slide();
// Add image
Image image = new Image();
image.Height = 200;
image.Width = 300;
image.LoadFromFile("sample.png");
slide.AddImage(image);
//slide.Position.X.Point = 100;
//slide.Position.Y.Point = 150;
presentation.AddSlide(slide);
// Export PowerPoint presentation
presentation.Save("sampleppt.pptx");
Console.WriteLine("PPT creation process ended");

Below is the output from the above code.

Conclusion

IronPPT for C# PowerPoint automation is a powerful and efficient way to programmatically alter and create slides. IronPPT is a lightweight high-performance tool through which programmers are able to incorporate text, graphics, charts, and other multimedia objects without ever needing to instantiate Microsoft Office Interop. It is convenient for data visualization, company presentations, and the generation of reports due to its capability to incorporate dynamic images into the slides.

A few of the easy-to-use functionalities that a developer can leverage while building professional-grade presentations in desktop, web, and cloud-based applications. The image export and PDF export support in IronPPT also render it an easy-to-use solution in various scenarios.

With its incorporation into C# applications, organizations can automate PowerPoint, process faster, and increase productivity. For business reports, marketing presentations, or instructional content, IronPPT facilitates all this, creating PowerPoint faster, at a mass scale, and efficiently. IronPPT license starts from 749$ to know more about ironPPT license details refer here. To know more about the other Iron software product refer here.

How to Add an Image to a PPT in C#