Copying Slide layouts from one presentation to another

I'm looking for the best way to copy the slide layouts from one presentation to an existing presentation.  I looked on the internet but found nothing on how to do this...  

Hi,

You can use below function for your purpose.

here:

presentationPart: is your pptx file presentation part

layoutName: Its the layout name which you want ot insert. Please take a note that this a layout with "layoutName" should exist in your Slide Master layout list.

  public static Slide InsertSlide(PresentationPart presentationPart, string layoutName)
        {
            SlideLayout sldlayout = new SlideLayout { layOutName = layoutName };
            if (presentationPart.Presentation.SlideIdList == null)
            {
                presentationPart.Presentation.SlideIdList = new SlideIdList();
            }
            uint num = 0x100;
            num += Convert.ToUInt32(presentationPart.Presentation.SlideIdList.Count<OpenXmlElement>());
            Slide slide = new Slide(new OpenXmlElement[] { new CommonSlideData(new OpenXmlElement[] { new ShapeTree() }) });
            SlidePart openXmlPart = presentationPart.AddNewPart<SlidePart>();
            slide.Save(openXmlPart);
            SlideMasterPart part2 = presentationPart.SlideMasterParts.First<SlideMasterPart>();
            SlideLayoutPart part = part2.SlideLayoutParts.SingleOrDefault<SlideLayoutPart>(new Func<SlideLayoutPart, bool>(sldlayout.IslayoutExist));
            openXmlPart.AddPart<SlideLayoutPart>(part);
            openXmlPart.Slide.CommonSlideData = (CommonSlideData)part2.SlideLayoutParts.SingleOrDefault<SlideLayoutPart>(new Func<SlideLayoutPart, bool>(sldlayout.IslayoutExist)).SlideLayout.CommonSlideData.Clone();
            SlideId id = presentationPart.Presentation.SlideIdList.AppendChild<SlideId>(new SlideId());
            id.Id = num;
            id.RelationshipId = presentationPart.GetIdOfPart(openXmlPart);
            return GetSlide(presentationPart, id.RelationshipId);
        }
private class SlideLayout
        {
            public string layOutName;
            public bool IslayoutExist(SlideLayoutPart layout)
            {
                return layout.SlideLayout.CommonSlideData.Name.Value.Equals(this.layOutName);
            }
        }

I'm having trouble seeing how the sample code above will help copy a slidelayout from

presentation A (template) to presentation B (blank or existing presentation). If you could give me some explanation it would help a lot.

Hi,

Attached is the sample application for adding 3 slides.

Hope this will help.

Pranay

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