public static void Run()
{
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_Conversion();
// Instantiate a Presentation object that represents a PPTX file
Presentation pres = new Presentation(dataDir + "PPTtoPPTX.ppt");
// Saving the PPTX presentation to PPTX format
pres.Save(dataDir + "PPTtoPPTX_out.pptx", SaveFormat.Pptx);
}
}