//http://stackoverflow.com/questions/32076114/c-sharp-openxml-sdk-2-5-insert-new-slide-from-slide-masters-with-the-layout
public static SlidePart AppendNewSlide(PresentationPart presentationPart, SlideLayoutPart masterLayoutPart, out IEnumerable <Shape> placeholderShapes)
{
Slide clonedSlide = new Slide()
{
ColorMapOverride = new ColorMapOverride {
MasterColorMapping = new Draw.MasterColorMapping()
}
};
SlidePart clonedSlidePart = presentationPart.AddNewPart <SlidePart>();
clonedSlidePart.Slide = clonedSlide;
clonedSlidePart.AddPart(masterLayoutPart);
clonedSlide.Save(clonedSlidePart);
var masterShapeTree = masterLayoutPart.SlideLayout.CommonSlideData.ShapeTree;
placeholderShapes = (from s in masterShapeTree.ChildElements <Shape>()
where s.NonVisualShapeProperties.OfType <ApplicationNonVisualDrawingProperties>().Any(anvdp => anvdp.PlaceholderShape != null)
select new Shape()
{
NonVisualShapeProperties = (NonVisualShapeProperties)s.NonVisualShapeProperties.CloneNode(true),
TextBody = new TextBody(s.TextBody.ChildElements <Draw.Paragraph>().Select(p => p.CloneNode(true)))
{
BodyProperties = new Draw.BodyProperties(),
ListStyle = new Draw.ListStyle()
},
ShapeProperties = new ShapeProperties()
}).ToList();
clonedSlide.CommonSlideData = new CommonSlideData
{
ShapeTree = new ShapeTree(placeholderShapes)
{
GroupShapeProperties = (GroupShapeProperties)masterShapeTree.GroupShapeProperties.CloneNode(true),
NonVisualGroupShapeProperties = (NonVisualGroupShapeProperties)masterShapeTree.NonVisualGroupShapeProperties.CloneNode(true)
}
};
SlideIdList slideIdList = presentationPart.Presentation.SlideIdList;
// Find the highest slide ID in the current list.
uint maxSlideId = slideIdList.Max(c => (uint?)((SlideId)c).Id) ?? 256;
// Insert the new slide into the slide list after the previous slide.
slideIdList.Append(new SlideId()
{
Id = ++maxSlideId,
RelationshipId = presentationPart.GetIdOfPart(clonedSlidePart)
});
//presentationPart.Presentation.Save();
return(clonedSlidePart);
}