C#: Copy Slides in PowerPoint Presentations

If you are preparing a large number of presentations, cloning slides can help you save resources. Instead of creating new slides from scratch for each presentation, it is more efficient and less time-consuming to modify existing slides. In this article, you will learn how to copy slides in PowerPoint presentations in C# using Spire.Presentation for .NET.

• Copy Slides Within the Same Presentation in C#
• Copy Slides to Another Presentation in C#

Install Spire.Presentation for .NET

To begin with, you need to add the DLL files included in the Spire.Presentation for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.

PM> Install-Package Spire.Presentation

Copy Slides Within the Same Presentation in C#

You can clone a slide either at a specified location or at the end of a PowerPoint presentation through the Presentation.Slides.Insert(intIndex, ISlide slide) or Presentation.Slides.Append(ISlide slide) methods. The following are the detailed steps.

• Create a Presentation instance.
• Load a PowerPoint presentation using Presentation.LoadFromFile() method.
• Get a specified slide using Prenstion.Slides[] property.
• Clone the slide to the end of the same presentation using Presentation.Slides.Append() method.
• Clone the slide to a specific position within the same presentation using Presentation.Slides.Insert() method.
• Save the result file using Presentation.SaveToFile() method.

using Spire.Presentation;

namespace CopySlides
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation instance
            Presentation ppt = new Presentation();

            //Load a PowerPoint presentation
            ppt.LoadFromFile("Input1.pptx");

            //Get the first slide in the presentation
            ISlide slide = ppt.Slides[0];

            //Clone the slide to the end of the presentation
            ppt.Slides.Append(slide);

            //Clone the slide to the third position within the presentation
            ppt.Slides.Insert(2, slide);

            //Save the result file
            ppt.SaveToFile("CloneSlidesWithinTheSame.pptx", FileFormat.Pptx2013);

        }
    }
}

Copy Slides to Another Presentation in C#

Spire.Presentation for .NET also allows you to load two PowerPoint files and then clone the slides from one presentation to another presentation. The following are the detailed steps.

• Create a Presentation instance.
• Load two PowerPoint presentations using Presentation.LoadFromFile() method.
• Get two slides in the first presentation using Prenstion.Slides[] property.
• Clone the first slide to a specific position in the second presentation using Presentation.Slides.Insert() method.
• Clone the second slide to the end of the second presentation using Presentation.Slides.Append() method.
• Save the result file using Presentation.SaveToFile() method.

using Spire.Presentation;

namespace CopySlidesToAnother
{
    class Program
    {
        static void Main(string[] args)
        {
            //Load the first PowerPoint presentation
            Presentation sourcePPT = new Presentation();
            sourcePPT.LoadFromFile("Input1.pptx");

            //Load the second PowerPoint presentation
            Presentation destPPT = new Presentation();
            destPPT.LoadFromFile("Input2.pptx");

            //Get two slides in the first presentation
            ISlide slide1 = sourcePPT.Slides[1];
            ISlide slide2 = sourcePPT.Slides[2];

            //Clone slide1 to the second position in the second presentation
            destPPT.Slides.Insert(1, slide1);

            //Clone slide2 to the end of the second presentation
            destPPT.Slides.Append(slide2);

            //Save the result file
            destPPT.SaveToFile("CloneSlidesToAnother.pptx", FileFormat.Pptx2013);

        }
    }
}

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