public static void Run()
{
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PresentationOpening();
// creating instance of load options to set the presentation access password
LoadOptions loadOptions = new LoadOptions();
// Setting the access password
loadOptions.Password = "pass";
// Opening the presentation file by passing the file path and load options to the constructor of Presentation class
Presentation pres = new Presentation(dataDir + "OpenPasswordPresentation.pptx", loadOptions);
// Printing the total number of slides present in the presentation
System.Console.WriteLine(pres.Slides.Count.ToString());
}
}