using Spire.Presentation;
using Spire.Presentation.Drawing;
using System.IO;
using System.Collections.Generic;

namespace PPT
{
    class Program
    {
        static void Main(string[] args)
        {
            //load the sample document with speaker notes
            Presentation ppt = new Presentation();
            ppt.LoadFromFile("Sample.pptx");

            //retain the notes when converting ppt to svg
            ppt.IsNoteRetained = true;


            //convert presentation slides to SVG
            Queue<byte[]> bytes = ppt.SaveToSVG();

            int length = bytes.Count;
            for (int i = 0; i < length; i++)
            {
                FileStream filestream = new FileStream(string.Format(@"output_{0}.svg", i), FileMode.Create);
                byte[] outputBytes = bytes.Dequeue();
                filestream.Write(outputBytes, 0, outputBytes.Length);
            }
            ppt.Dispose();
            ppt.SaveToSVG();
                                                       
        }
    }
}