public static void Run()
{
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_Slides_Presentations_Background();
// Instantiate the Presentation class that represents the presentation file
using (Presentation pres = new Presentation(dataDir + "SetBackgroundToGradient.pptx"))
{
// Apply Gradiant effect to the Background
pres.Slides[0].Background.Type = BackgroundType.OwnBackground;
pres.Slides[0].Background.FillFormat.FillType = FillType.Gradient;
pres.Slides[0].Background.FillFormat.GradientFormat.TileFlip = TileFlip.FlipBoth;
//Write the presentation to disk
pres.Save(dataDir + "ContentBG_Grad_out.pptx", SaveFormat.Pptx);
}
}
}