In this article, we will explain how to copy a shapes or all shapes from one slide into another within the same PowerPoint document by using Spire.Presentation.
Firstly, view the sample PowerPoint document:

Copy a single shape from the first slide to the second slide:
//Load the sample document
Presentation ppt = new Presentation();
ppt.LoadFromFile("Sample.pptx");
//define the source slide and target slide
ISlide sourceSlide = ppt.Slides[0];
ISlide targetSlide = ppt.Slides[1];
//copy the second shape from the source slide to the target slide
targetSlide.Shapes.AddShape((Shape)sourceSlide.Shapes[1]);
//save the document to file
ppt.SaveToFile("Copyshape.pptx", FileFormat.Pptx2013);
Effective screenshot after copy a single shape from the first slide to second slide:

Copy all shapes from the first slide to the second slide:
//Load the sample document
Presentation ppt = new Presentation();
ppt.LoadFromFile("Sample.pptx");
//copy all the shapes from the source slide to the target slide
for (int i = 0; i < ppt.Slides.Count - 1; i++)
{
ISlide sourceSlide = ppt.Slides[i];
ISlide targetSlide = ppt.Slides[ppt.Slides.Count - 1];
for (int j = 0; j < sourceSlide.Shapes.Count; j++)
{
targetSlide.Shapes.AddShape((Shape)sourceSlide.Shapes[j]);
}
}
//save the document to file
ppt.SaveToFile("Copyshapes.pptx", FileFormat.Pptx2013);
Effective screenshot after copy all shapes from the first slide to second slide:

