C# POWERPOINT LIBRARYHigh-performance Xamarin PowerPoint Framework

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:XamarinApp"
             x:Class="XamarinApp.MainPage">

    <StackLayout>
        <!-- Place new controls here -->
        <Button Text="Submit" Clicked="Button_Clicked" HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand"></Button>
    </StackLayout>

</ContentPage>

//Creates PowerPoint Presentation
using (IPresentation pptxDoc = Presentation.Create())
{
    //Adds slide to the PowerPoint
    ISlide slide = pptxDoc.Slides.Add(SlideLayoutType.Blank);
    //Adds textbox to the slide
    IShape textboxShape = slide.AddTextBox(0, 0, 500, 500);
    //Adds paragraph to the textbody of textbox
    IParagraph paragraph = textboxShape.TextBody.AddParagraph();
    //Adds a TextPart to the paragraph
    ITextPart textPart = paragraph.AddTextPart();
    //Adds text to the TextPart
    textPart.Text = "AdventureWorks Cycles, the fictitious company on which the AdventureWorks sample databases are based, is a large, multinational manufacturing company. The company manufactures and sells metal and composite bicycles to North American, European and Asian commercial markets. While its base operation is located in Washington with 290 employees, several regional sales teams are located throughout their market base.";
    //Saves the pptx file to file on local storage    
    MemoryStream pptxStream = new MemoryStream();
    pptxDoc.Save(pptxStream);
    pptxStream.Position = 0;
    //Save the stream as a file in the device and invoke it for viewing
    Xamarin.Forms.DependencyService.Get<ISave>().SaveAndView("Output.pptx", "application/presentation", pptxStream);
}