poiwerpoint属于那类计算机软件,c# - Microsoft.Office.Interop.PowerPoint.Application tries to save when I just ...

I'm running the following code to open a PowerPoint file from a WPF app. The file opens, but after clicking through the slideshow I'm prompted something along the lines of, "We can't save the slideshow because it is read-only" - even though the file is not set as read-only, and also I didn't want to save it - just play it. Does anybody have any insight so I can play it without attempting to save it?

Microsoft.Office.Interop.PowerPoint.Application pptApp = new

Microsoft.Office.Interop.PowerPoint.Application();

Microsoft.Office.Interop.PoIwerPoint.Presentation presentation =

pptApp.Presentations.Open2007(fileName,

Microsoft.Office.Core.MsoTriState.msoFalse,

Microsoft.Office.Core.MsoTriState.msoFalse,

Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue);

Microsoft.Office.Interop.PowerPoint.SlideShowSettings sst =

presentation.SlideShowSettings;

sst.ShowType = Microsoft.Office.Interop.PowerPoint.PpSlideShowType.ppShowTypeSpeaker;

sst.Run();