How can I copy shapes from one slide to another slide in c#?

Question

I need to insert shape(s) from presentation1 to presentation2. We can insert a slide like

pptApp.Presentations[Presentation2].Slides.InsertFromFile(\"presenation1\"

Answer 1

var origSlide = origPres.Slides[slideNum];
var destSlide = newPres.Slides[slideNum];
foreach (Shape origShape in origSlide.Shapes)
{
    origShape.Copy();
    newPres.Slides.Paste(slideNum);
}