Aspose.Slides.NET 22.9.0

Get Font List of Unknown Fonts PPTX .NET API

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Aspose.Slides for .NET is a cross-platform API that helps in developing applications with the ability to create, manipulate, inspect, or convert Microsoft PowerPoint and OpenOffice presentation files without any dependency.

Presentation Processing Features

• Intuitive Document Object Model: Aspose.Slides' object model gives complete control over presentation elements such as slides, shapes, frames, charts, multimedia, embedded objects, controls, tables, text, transitions and formatting. Developers can use this object model to create complex PowerPoint File Processing applications that can dynamically generate presentations, create or manipulate presentation slides, apply transitions or add animation effects.
• File Format Conversion: API allows to load & convert PowerPoint presentation, template & slideshow file formats to other supported formats without needing to understand the underlying structure of source or destination formats. The conversion process is simple yet reliable with results identical to the original file in its native application.
• Rendering & Printing: Developers can render the whole presentation or selective slides to fixed-layout formats such as PDF & XPS as well as raster & vector image formats including PNG, JPEG, SVG, and so on. It is also possible to print presentations via physical or virtual printers.
• Presentation Security: Load protected presentations or control access to presentations, slides, or objects via advanced security features.
• Availability of 24 pre-defined textures & 48 patterns for quick styling.

What's new in v22.9.0

Get Font List of Unknown Fonts

This PPT API release offers the ability to fetch the list of all unknown fonts. This lets you know the fonts which need to be substituted or replaced for the correct rendering of presentation slides.

using (Presentation pres = new Presentation("pres.pptx"))
{
    foreach (var fontSubstitution in pres.FontsManager.GetSubstitutions())
    {
        Console.WriteLine("{0} -> {1}", fontSubstitution.OriginalFontName, fontSubstitution.SubstitutedFontName);
    }
} 

Configure Slide Effect Repetition Behavior

Couple of new properties have been added to the Timing class. These properties let you configure if the slide effect will be repeated till the next click or the effect should be repeated till the end of slide.

The following C# sample code demonstrates:

1. How to fetch the effects sequence of the desired slide
2. Get the desired effect that you want to repeat
3. Set the slide effect repeat timing till the end of slide via API

using (Presentation presentation = new Presentation("demo.pptx"))
{
    // Gets the effects sequence for the first slide
    ISequence effectsSequence = presentation.Slides[0].Timeline.MainSequence;

    // Gets the first effect of the main sequence.
    IEffect effect = effectsSequence[0];

    // Changes the effect Timing/Repeat to "Until End of Slide"
    effect.Timing.RepeatUntilEndSlide = true;
}

For a complete list of features, enhancements, and bug fixes in this release please visit, Aspose.Slides for .NET 22.9 Release Notes.

Read & Write PowerPoint Files

Microsoft PowerPoint: PPT, POT, PPS, PPTX, POTX, PPSX, PPTM, PPSM, POTM
OpenDocument: ODP, OTP
Metafile: EMF
Image: TIFF, XML

Save Presentation As

Fixed Layout: PDF, XPS
Image: JPEG, PNG, GIF, BMP, SVG
Web: HTML

Platform Independence

Aspose.Slides for .NET can be used to build any type of 32-bit or 64-bit .NET application including ASP.NET, WCF & WinForms as well as via COM Interop while using diverse programming languages including C++, VBScript & classic ASP. The package provides assemblies to be used with Mono on various flavors of Linux, .NET Core, Xamarin.Android & Xamarin.Mac.

Get Started

Let's give Aspose.Slides for .NET a try! Simply execute Install-Package Aspose.Slides.NET from Package Manager Console in Visual Studio to fetch the NuGet package. If you already have Aspose.Slides for .NET and want to upgrade the version, please execute Update-Package Aspose.Slides.NET to get the latest version.

Create a PPTX Presentation from Scratch with C# Code

You can execute the below code snippet to see how Aspose.Slides API performs in your environment or check the GitHub Repository for other common usage scenarios.

// instantiate a Presentation object that represents a presentation file
using (Presentation presentation = new Presentation())
{
    // get the first slide
    ISlide slide = presentation.Slides[0];

    // add an autoshape of type line
    slide.Shapes.AddAutoShape(ShapeType.Line, 50, 150, 300, 0);
    presentation.Save(dir + "output.pptx", SaveFormat.Pptx);
}

Convert Specific Slides to PDF Format using C# Code

// instantiate a Presentation object that represents a presentation file
using (Presentation presentation = new Presentation(dir + "template.pptx"))
{
    // setting array of slides positions
    int[] slides = { 1, 3 };
    // save the presentation to PDF
    presentation.Save(dir + "output.pdf", slides, SaveFormat.Pdf);
}

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