Club Multiple Powerpoint to Single File in ASP.NET

C#.NET : Merge multiple PPT into one file



 protected void btnClubPPT_Click(object sender, EventArgs e)
        {
            try
            {
                    String strPath = Server.MapPath("Uploads\\");
                    String strConsolidatedPPT = Server.MapPath("SuccessStory\\");
                    string[] files = Directory.GetFiles(strPath, "*.ppt");
                    for (int i = 0; i < files.Length; i++)
                    {
                        CopySlidesFromPPT(files[i].ToString(), strConsolidatedPPT + "Consolidated Success Story.ppt");
                    }
                }
                System.Diagnostics.Process.Start(Server.MapPath("SuccessStory\\") + "Consolidated Success Story.ppt");
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                GC.Collect();
            }



 public static bool CopySlidesFromPPT(string sourcefile, string dstfile)
        {
            bool success = false;

            // Create a link to the PowerPoint object model           

            Microsoft.Office.Interop.PowerPoint.Application oPowerPoint = new Microsoft.Office.Interop.PowerPoint.Application ();
            Microsoft.Office.Interop.PowerPoint.Presentations oPres = oPowerPoint.Presentations;
            Microsoft.Office.Interop.PowerPoint.Presentation oPre = null;

            // If the destination presentation exists on disk, load it so
            // that we can append the new slides           

            if (File.Exists(dstfile) == true)
            {
                try
                {
                    // Try and open the destination presentation
                    oPre = oPres.Open(dstfile, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoFalse);
                }
                catch
                {
                    oPre = null;
                }
            }
            else
            {
                // Create a new presentation
                try
                {
                    oPre = oPres.Add(Microsoft.Office.Core.MsoTriState.msoFalse);
                }
                catch
                {
                    oPre = null;
                }
            }

            // Do we have a master presentation ?          

            if (oPre != null)
            {
                // Point to the slides in the master presentation
                Microsoft.Office.Interop.PowerPoint.Slides oSlides = oPre.Slides;
                try
                {
                    try
                    {
                        // Open the source presentation
                        Microsoft.Office.Interop.PowerPoint.Presentation ppps = oPres.Open(sourcefile, Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoTrue, Microsoft.Office.Core.MsoTriState.msoFalse);
                        try
                        {
                            // Insert the source slides onto the end of the merge presentation
                            oSlides.InsertFromFile(sourcefile, oSlides.Count, 1, ppps.Slides.Count);
                            oPre.SaveAs(dstfile, Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType.ppSaveAsDefault, Microsoft.Office.Core.MsoTriState.msoFalse);
                            // Save the merged presentation back to disk
                            // oPre.SaveAs(dstfile, Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType.ppSaveAsPresentation, Microsoft.Office.Core.MsoTriState.msoFalse);
                            // Signal success
                            success = true;
                        }
                        finally
                        {
                            // Close the source presentation
                            ppps.Close();
                        }
                    }
                    catch
                    {

                    }

                }
                finally
                {
                    // Ensure the merge presentation is closed
                    oPre.Close();
                    // Release the COM object holding the merged presentation
                    Marshal.ReleaseComObject(oPre);
                    oPre = null;
                    // Release the COM object holding the presentations
                    Marshal.ReleaseComObject(oPres);
                    oPres = null;
                    // Release the COM object holding the powerpoint application
                    Marshal.ReleaseComObject(oPowerPoint);
                    oPowerPoint = null;
                }
            }
            return success;
        }