Programming
How does Windows 8 Runtime WinRT Windows Store apps Windows 10 Universal App compare to Silverlight and WPF closed
Choosing the right technology for your Windows application development can be a daunting task. With options like Windows 8 Runtime (WinRT), later evolving into the Universal Windows Platform (UWP), Silverlight, and Windows Presentation Foundation (WPF), it’s crucial to understand their strengths and weaknesses to make an informed decision. This article dives deep into a comparison of these technologies, exploring their core functionalities, benefits, and limitations to help you choose the best fit for your project.
Understanding the Contenders
Before we delve into the comparison, let’s define each technology. WinRT, the foundation for Windows Store apps and later UWP apps, is a modern application architecture designed for touch-friendly interfaces and seamless integration with the Windows operating system. Silverlight, now largely deprecated, was a browser plugin focused on rich media experiences. WPF, on the other hand, remains a robust framework for building desktop applications with advanced UI capabilities using XAML.
Understanding these fundamental differences is the first step toward selecting the appropriate technology for your specific needs. Each technology caters to distinct use cases, and understanding these distinctions is vital for success.
WinRT/UWP vs. Silverlight: A Paradigm Shift
WinRT marked a significant shift from the plugin-based approach of Silverlight. While Silverlight offered cross-platform compatibility, WinRT focused on tight integration with the Windows ecosystem, leveraging features like live tiles, notifications, and access to device hardware. This focus on the Windows platform allowed WinRT/UWP apps to offer a more native and immersive user experience.
Silverlight’s reliance on a browser plugin eventually led to its decline, as web technologies advanced and plugin-free solutions became the standard. WinRT, and its evolution into UWP, embraced this shift by focusing on a modern app model that aligns with the evolving web landscape.
WPF vs. WinRT/UWP: Desktop vs. Universal
WPF and WinRT/UWP, while both based on XAML, serve different purposes. WPF excels in creating complex desktop applications with rich UI and robust data binding capabilities. WinRT/UWP initially targeted a more mobile-centric approach, emphasizing touch interaction and a simplified UI. However, with UWP, the lines blurred, allowing developers to target both desktop and mobile devices with a single codebase.
Choosing between WPF and UWP depends largely on your target audience. For desktop-focused applications requiring extensive customization and deep integration with the operating system, WPF offers a powerful platform. If you aim for a broader reach across Windows devices, including tablets and phones, UWP provides the best approach.
Key Differences in Architecture
A core difference lies in their underlying architectures. Silverlight operated within a sandboxed environment within the browser, limiting access to system resources. WinRT/UWP and WPF, on the other hand, have varying levels of system access depending on the application’s permissions. This difference significantly impacts functionality and security considerations.
- Security models differ significantly between the platforms.
- Performance characteristics vary based on application architecture.
Understanding these architectural nuances is crucial for designing and deploying secure and performant applications. Choosing the right architecture can significantly impact the user experience and the overall success of your application.
- Analyze your project requirements.
- Choose the appropriate technology based on the target platform and functionality.
- Develop and deploy your application.
For deeper insights into WinRT and UWP development, consider checking out this resource.
Featured Snippet Optimized Paragraph: While Silverlight is effectively obsolete, choosing between WinRT/UWP and WPF depends on your specific needs. UWP is ideal for cross-device compatibility, while WPF excels in complex desktop applications.
FAQs
Q: Is Silverlight still a viable option for new projects?
A: No, Silverlight is deprecated and no longer actively supported. Migrating existing Silverlight applications to newer technologies like WPF or UWP is recommended.
As we’ve seen, choosing the right technology requires careful consideration of your project’s specific requirements. While Silverlight is no longer a contender, WPF and WinRT/UWP offer powerful solutions for diverse application development scenarios. Consider your target platform, performance requirements, and desired user experience when making your decision. Explore the linked resources to delve deeper into each technology and empower your development journey. Selecting the right framework will pave the way for a successful and impactful application. Don’t hesitate to consult with experts in the field to ensure you make the best choice for your specific project needs. Further research on individual frameworks will provide additional clarity.
[Infographic comparing WinRT/UWP, Silverlight, and WPF]
Question & Answer :
Can someone explain what it is in a few paragraphs, in terms that a .NET UI programmer can understand? (I am missing something “key” that is necessary to understand it.)
We all know that WPF, Silverlight, Windows Forms, etc. will keep working under Windows 8 (and Windows 10) on at least on Intel systems, so please don’t tell me that…
At the lowest level, WinRT is an object model defined on ABI level. It uses COM as a base (so every WinRT object implements IUnknown and does refcounting), and builds from there. It does add quite a lot of new concepts in comparison to COM of old, most of which come directly from .NET - for example, WinRT object model has delegates, and events are done .NET-style (with delegates and add/remove subscriber methods, one per event) rather than the old COM model of event sources and sinks. Of other notable things, WinRT also has parametrized (“generic”) interfaces.
One other big change is that all WinRT components have metadata available for them, just like .NET assemblies. In COM you kinda sorta had that with typelibs, but not every COM component had them. For WinRT, the metadata is contained in .winmd files - look inside “C:\Program Files (x86)\Windows Kits\8.0\Windows Metadata\” in Developer Preview. If you poke around, you’ll see that they are actually CLI assemblies with no code, just metadata tables. You can open them with ILDASM, in fact. Note, this doesn’t mean that WinRT itself is managed - it simply reuses the file format.
Then there are a number of libraries implemented in terms of that object model - defining WinRT interfaces and classes. Again, look at “Windows Metadata” folder mentioned above to see what’s there; or just fire up Object Browser in VS and select “Windows 8.0” in the framework selector, to see what’s covered. There’s a lot there, and it doesn’t deal with UI alone - you also get namespaces such as Windows.Data.Json, or Windows.Graphics.Printing, or Windows.Networking.Sockets.
Then you get several libraries, which are specifically dealing with UI - mostly these would be various namespaces under Windows.UI or Windows.UI.Xaml. A lot of them are very similar to WPF/Silverlight namespaces - e.g. Windows.UI.Xaml.Controls is closely matching System.Windows.Controls; ditto for Windows.UI.Xaml.Documents etc.
Now, .NET has the ability to directly reference WinRT components as if they were .NET assemblies. This works differently from COM Interop - you don’t need any intermediate artifacts such as interop assemblies, you just /r a .winmd file, and all types and their members in its metadata become visible to you as if they were .NET objects. Note that WinRT libraries themselves are fully native (and so native C++ programs that use WinRT do not require CLR at all) - the magic to expose all that stuff as managed is inside the CLR itself, and is fairly low level. If you ildasm a .NET program that references a .winmd, you’ll see that it actually looks like an extern assembly reference - there’s no sleight of hand trickery such as type embedding there.
It’s not a blunt mapping, either - CLR tries to adapt WinRT types to their equivalents, where possible. So e.g. GUIDs, dates and URIs become System.Guid, System.DateTime and System.Uri, respectively; WinRT collection interfaces such as IIterable<T> and IVector<T> become IEnumerable<T> and IList<T>; and so on. This goes both ways - if you have a .NET object that implements IEnumerable<T>, and pass it back to WinRT, it’ll see it as IIterable<T>.
Ultimately, what this means is that your .NET Metro apps get access to a subset of the existing standard .NET libraries, and also to (native) WinRT libraries, some of which - particularly Windows.UI - look very similar to Silverlight, API-wise. You still have XAML to define your UI, and you still deal with the same basic concepts as in Silverlight - data bindings, resources, styles, templates etc. In many cases, it is possible to port a Silverlight app simply by using the new namespaces, and tweaking a few places in code where the API was adjusted.
WinRT itself doesn’t have anything to do with HTML and CSS, and it bears relation to JavaScript only in a sense that it is also exposed there, similar to how it is done for .NET. You don’t need to deal with HTML/CSS/JS when you use WinRT UI libraries in your .NET Metro app (well, I guess, if you really want to, you can host a WebView control…). All your .NET and Silverlight skills remain very much relevant in this programming model.
