.net - C# - Show PowerPoint Presentations continous -

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i want play ppt files in continuous loop, when open new file after first has reached last slide, new powerpoint window opens , starts slide. how can solve problem?

        public microsoft.office.interop.powerpoint.slideshowwindow startppt(string pptdatei)     {         watchinglabel.text = "präsentation läuft...";         started = true;         ende = false;         objpres = ppapp.presentations.open(pptdatei, microsoft.office.core.msotristate.msofalse, microsoft.office.core.msotristate.msotrue, microsoft.office.core.msotristate.msotrue);          objpres.slideshowsettings.showwithanimation = microsoft.office.core.msotristate.msotrue;         preswin = objpres.slideshowsettings.run();          return preswin;     }      private void timer1_tick(object sender, eventargs e)     {         watchinglabel.text = "watching...";          if (system.io.directory.exists(ordner))         {             pptdatei.clear();             pptdatei.addrange(system.io.directory.getfiles(ordner, "*.ppt"));              if (started == true && preswin.view.state == microsoft.office.interop.powerpoint.ppslideshowstate.ppslideshowdone)             {                 objpres.close();                 ende = true;                 started = false;             }              if (pptdatei.count > 0 && ende && started == false)             {                 if (index < pptdatei.count)                 {                     startppt(pptdatei[index]);                     index += 1;                 }                 else                 {                     index = 0;                 }             }             else if (pptdatei.count > 0 && ende == false && started == true)             {                 preswin.view.next();             }          }     }      public void ppapp_presentationclose(microsoft.office.interop.powerpoint.presentation pres)      {         pptdatei = new list<string>();         started = false;         ende = true;         watchinglabel.text = "präsentation beenden...";     }      public void ppapp_slideshowend(microsoft.office.interop.powerpoint.presentation pres)      {         ende = true;         started = false;     }

unfortunately, no, can't multiple powerpoint files. prior powerpoint 2010, cannot have more 1 ppt running @ same time (and pp2010 it's wonky so). shutting 1 down , opening new 1 run, lose main run window.

you create multiple powerpoint instance, set them visible/hidden , when 1 slideshow ends, programmatically unhide next 1 , display run, suffer same flicker issue have.

the best can read ppts in directory, merge them new deck in order need (and specifying layouts, etc.) , run single deck in kiosk-loop.


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