How can I open Powerpoint PPTX File with C# application?

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C#

using Microsoft.Office.Core;
using PowerPoint = Microsoft.Office.Interop.PowerPoint;

         PowerPoint.Application oPPT;
         PowerPoint.Presentations objPPTSHOW;
         PowerPoint.Presentation objSHOW;
         oPPT = new PowerPoint.ApplicationClass();
         oPPT.Visible = Microsoft.Office.Core.MsoTriState.msoCTrue;
         objPPTSHOW = oPPT.Presentations;
         objSHOW = objPPTSHOW.Open(txtFILELOC.Text, MsoTriState.msoFalse, MsoTriState.msoCTrue, MsoTriState.msoCTrue);

I use this coding for opening PPT File but it doesn't work. I'm using C# 2005 and selected MicroSoft PowerPoint 12.0 Object library.
error show COMException was unhandled. Error code is -2147467259. Anyone can help me please?

Posted 21-Mar-12 12:04pm

Dong Kim

Updated 13-May-16 8:40am

Wes Aday

v2

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3 solutions

Solution 10

When it（Presentations.Open） opens large files(>= 1G ppt file), it loads very slowly, and how to deal with it ?

Posted 12-Apr-18 19:11pm

Member 13713310

Updated 12-Apr-18 20:04pm

Solution 7

Are you trying to do this:

System.Diagnostics.Process.Start("pptfilename.pptx")

Thanks,
Ambesha

Posted 2-Aug-13 4:42am

Ambesha

Comments

CHill60 2-Aug-13 12:53pm

nope - he was using interop ... a year ago. Chetan Ghorely's solution works

Ambesha 3-Aug-13 3:22am

Question is why if he just want to open pptx file.

CHill60 4-Aug-13 13:25pm

He may have wanted to do more ... such as automatically display the slideshow or highlight a particular slide or link the presentation to some audio etc etc etc. The main point though is that the question was resolved over a year ago

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Chetan Ghorley · Accepted Answer · 2012-03-24T16:54:00

C#

Microsoft.Office.Interop.PowerPoint.Application ppApp = new Microsoft.Office.Interop.PowerPoint.Application();
ppApp.Visible = MsoTriState.msoTrue;
Presentations ppPresens = ppApp.Presentations;							Presentation objPres = ppPresens.Open(e.FullPath, MsoTriState.msoFalse, MsoTriState.msoTrue, MsoTriState.msoTrue);
Slides objSlides = objPres.Slides;
								Microsoft.Office.Interop.PowerPoint.SlideShowWindows objSSWs;							Microsoft.Office.Interop.PowerPoint.SlideShowSettings objSSS;
//Run the Slide show
objSSS = objPres.SlideShowSettings;
objSSS.Run();
objSSWs = ppApp.SlideShowWindows;
while(objSSWs.Count >= 1) 
System.Threading.Thread.Sleep(100);
//Close the presentation without saving changes and quit PowerPoint
objPres.Close();
ppApp.Quit();