Aspose.Slides for .NET 16.9.0 Release Notes

using (Presentation pres = new Presentation())
{
     IBackground background = pres.Slides[0].Background;
     background.Type = BackgroundType.OwnBackground;

     // Set slide background to Solid color
     background.FillFormat.FillType = FillType.Solid;
     background.FillFormat.SolidFillColor.Color = Color.Cornsilk;

     // Add shadow to slide
     background.EffectFormat.EnableOuterShadowEffect();
     IOuterShadow shadow = background.EffectFormat.OuterShadowEffect;
     shadow.ShadowColor.Color = Color.Chocolate;
     shadow.Distance = 15.0;
     shadow.Direction = 45f;

     pres.Save(path + "out.pptx", SaveFormat.Pptx);
}

using(Presentation pres = new Presentation())
{
    pres.Slides[0].CustomData.CustomXmlParts.Add(GetXmlStringSample("John Doe")); //add new custom xml to slide custom data
    pres.Save(@"out.pptx", SaveFormat.Pptx);
}
private static string GetXmlStringSample(string name)
{
    string xmlString =
        "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
        "<employees xmlns=\"http://schemas.test.com/sample\">" +
            "<employee>" +
                "<name>" + name + "</name>" +
            "</employee>" +
        "</employees>";
    return xmlString;
}

//Sample for clear all custom xml parts from presentation
using (Presentation pres = new Presentation("PresentationWithCustomXml.pptx"))
{
    foreach (ICustomXmlPart item in pres.AllCustomXmlParts)
    {
        item.Remove();
    }
    pres.Save("out.pptx", SaveFormat.Pptx);
}

using (Presentation pres = new Presentation())
{
    IChart chart = pres.Slides[0].Shapes.AddChart(ChartType.Line, 10, 10, 400, 300);
    chart.ChartData.SetRange("Sheet1!A1:B4");
    pres.Save("output.pptx", Export.SaveFormat.Pptx);
}