using System;

 using System.Collections.Generic;

 using System.ComponentModel;

 using System.Data;

 using System.Drawing;

 using System.Text;

 using System.Linq;

 using System.Windows.Forms;

 using System.IO;

 using Aspose.Slides;

 namespace ppttopdf

 {

     public partial class Form1 : Form

     {

         public Form1()

         {

             InitializeComponent();

         }

         private void button1_Click(object sender, EventArgs e)

         {

             //PPT

             Presentation ppt = new Presentation(@"E:\work\dll\officetopdf\file1\123.ppt");

             ppt.Save(@"E:\work\dll\officetopdf\file2\temp3.pdf", Aspose.Slides.Export.SaveFormat.Pdf);

         }

     }

 }