Universal Windows Platform

Welcome to the Windows Platform Developer (WPDev) Feedback site. This feedback forum provides the WPDev community with a channel for feedback on the following topics:

  • Windows developer platform (APIs, runtimes, and controls)
  • Dev Center Store (developer portal, back-end services, reporting/analytics and process)
  • Windows Stores (Windows and Windows Phone)

Your suggestions will be reviewed by the Windows platform developer team, providing feedback to help with planning ideas and to better understand how developers are using the development platform.

What this forum is not intended to cover or capture:

If you’re new to this whole UserVoice thing, we’d like to note two important things about this site: (a) List items (and item rankings) represent community interest in features, and does not represent an actual priority list for the product team; and (b) Suggestions made using this forum will be moderated if they do not actually represent a feature request.

How can we improve the Windows dev platform?

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  1. Support SVG elements in XAML

    The high-level ask is to support using SVG within a XAML tree. The SVG data may be inline or loaded from a source (local file or remote from the web)

    There are few current tools for converting SVG to WPF/Silverlight-based XAML but they fall short when dealing with more complex SVG data.

    Here are a few scenarios:

    - Apps loading svg content from a remote web server. This should work just like any other kind of image data. Remote xaml isn’t likely allowed, and even if it were, there’d be resistance to providing vector art in two formats when SVG…

    683 votes
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      8 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →

      Thanks for the continued feedback in this area. We’re exploring ways to enable this easier in the platform than existing alternatives. SVG has a lot of facets to it and we want to ensure we are hitting the right scenarios without sacrificing platform integrity and performance.

    • Add Markup Extensions to (and Improve) WinRT Xaml System (System.Xaml Parity)

      Much effort was made in WPF Xaml Serialization to decouple it from the presentation assemblies and moved into its own assemblies, System.Xaml, and System.Windows.Markup.

      This Xaml System had it's own serialization/deserialization mechanism in XamlServices class. Furthermore, this Xaml system had a very powerful component/concept that is conspicuously absent in WinRT: Markup Extensions.

      Markup Extensions are found in the following Xaml Systems:
      - WPF
      - Silverlight 5
      - Xamarin.Forms (notably NOT a Microsoft technology, but recognizes their power nonetheless)

      This feature is to ask for Xaml serialization featureset parity with WPF/System.Xaml. That means:
      - Custom Markup Extensions
      - XamlServices.Load and Save …

      415 votes
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        14 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
      • Add support for 'XmlnsDefinitionAttribute'

        XmlnsDefinitionAttribute is an absolutely great attribute for Control Library developers. It allows the developers of that control library to greatly simplify the xaml by reducing the number of XMLNS declarations they need.
        The only way around this is for the control vendor to throw every single class that might be used in XAML (not just controls but other types too), in the same namespace, creating a very ugly unwieldy API to code against.

        If you use a 3rd party control library or you're a control library vendor, you should vote for this. It'll save you a lot of typing, looking…

        324 votes
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          5 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
        • Set break/trace-points in XAML x:Bind to have it set in code-gen

          When debugging XAML apps, it should be possible to set a breakpoint or tracepoint on an x:Bind and have the debugger stop on the code-gen binding.

          The generated bindings code is very large and not easy to follow. Further, it doesn't even exist until compilation and even then isn't visible to the user in VS.

          The idea here is to set a breakpoint or tracepoint in XAML and have VS break on the appropriate code-gen method instead.

          213 votes
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            0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
          • Ancestor binding missing

            Currently the RelativeSourceMode only supports None, TemplatedParent and Self.

            Would be really helpful to have FindAncestor API added, just like in Silverlight 5 and WPF.

            168 votes
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              0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
            • Replace Xamarin.Forms Xaml syntax with latest UWP Xaml

              Now that Microsoft has bought Xamarin, integrated it in Visual Studio and made it free, it would be awesome to replace Xamarin.Forms Xaml syntax with current UWP so that Devs can benefit from all the new rich features such as RelativePanel, x:Bind, Adaptive Triggers, Live Visual Tree etc and also no learning curve for Xamarin.Forms-specific naming conventions (e.g StackLayout instead of StackPanel)

              137 votes
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                5 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →

                This is great feedback. We are excited about the Xamarin acquisition and the .NET ecosystem around cross-platform apps. We are currently looking at this and similar feedback on how we can improve the experience of working with both Xamarin.Forms and UWP implementations of XAML.

              • Improve WinRT Frame caching and navigation behavior

                Windows Runtime API has presented Frame class, which page caching and navigation logic differs from a corresponding Frame class from Windows Phone Silverlight API set. This new Frame class gives a lot of pain to developers, because in many cases it cannot provide such app and navigation state management, which can be used to create good and predictable user expirience. Therefore, I want to request adding of some improvements in WinRT API to bring Frame's behavior closer to it's analog from WP Silverlight.

                More info about the problem can be found here:
                http://stackoverflow.com/questions/11539755/winrt-frame-and-page-caching-how-to-create-new-page-instance-on-navigate-and
                http://caliburnmicro.com/announcements/application-state-part-1/
                http://caliburnmicro.com/announcements/application-state-part-2/
                http://caliburnmicro.com/announcements/application-state-part-3/
                https://github.com/Caliburn-Micro/Caliburn.Micro/issues/95

                120 votes
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                  3 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                • Implement System.ComponentModel.TypeConverter in WinRT APIs

                  TypeConverter is helpful because it allows the author of a type to provide intrinsic support for determining to/from which types a type may be converted and actually converting between types - most typically for converting to/from string but other types as well.

                  108 votes
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                    6 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                  • DataAnnotations in WP8.1 WinRT - Validation

                    Bring System.ComponentModel.DataAnnotations namespace to Windows Phone 8.1 (WinRT) to allow client side validation like for Windows Store apps.

                    55 votes
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                      2 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                    • Sortable Observable Collection

                      Currently for dynamic data binding controlls like listbox, <a href="http://msdn.microsoft.com/en-us/library/ms668604%28v=vs.95%29.aspx">ObservableCollection</a> is recommended. However the collection does not implement Sort, and it does even implement Move (so you can implement sorting on your own by extending it). Can we have a sortable observable collection for WP7?

                      36 votes
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                        3 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                      • Add "nearest neighbor" scaling option for Images (similar to RenderOptions.BitmapScalingMode in WPF)

                        WinRT doesn't have an easy way to scale images with the nearest neighbor algorithm. When I have an image that will be zoomed in on, I don't want it to get anti-aliased, which is the forced current behavior in WinRT. If there was a feature like WPF's RenderOptions.BitmapScalingMode that supported specification of a nearest neighbor algorithm, it would fix the problem.

                        22 votes
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                          0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                        • DataGrid Control for WinRT

                          Some business applications require this type of control!!!
                          Windows Store Apps for the line-of-business (LOB) apps need help.

                          12 votes
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                            1 comment  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                          • UWP XAML MediaElement auto hide cursor on fullscreen mode

                            When playing a video using XAML MediaElement the cursor should hide automatically after some seconds. The same way that control panel does.

                            10 votes
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                              on the backlog  ·  0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                            • Add TileMode and View* properties on TileBrush

                              In WinRT, the TileBrush class is missing the TileMode and View* properties that are present in other frameworks like WPF and Silverlight. Please add these properties so that we can support image tiling properly.

                              There are tons of requests for this over the past years. See this thread for an example:

                              http://social.msdn.microsoft.com/Forums/windowsapps/en-US/bb5aa859-e3d1-46f2-a661-d4bdbee9a1f2/windowsuixamlmediaimagebrush?forum=winappswithcsharp

                              9 votes
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                                0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                              • Add Full Line or No Whitespace Option to TextWrapping Enumeration

                                When displaying text, I sometimes want all lines to extend the full width of the line, even if that means breaking in the middle of words (I most often want this feature when displaying things such as URLs). I think this feature should be added by adding an option to the TextWrapping enumeration (maybe TextWrapping.FullLine or TextWrapping.NoWhitespace or TextWrapping.BreakAnywhere). I feel this is a very basic design style and is used often enough that it should be built into .NET & XAML.

                                6 votes
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                                  0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                                • ListView doesn't handle NotifyCollectionChangedAction.Move

                                  ListView mishandles NotifyCollectionChangedAction is several ways.

                                  1. It causes the ListView to scroll to the top which was unexpected and therefore frustrating to diagnose.
                                  2. There's no associated animation. Mapping it to an add/remove would be acceptable, but a specific animation for move would also be nice.

                                  4 votes
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                                    0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Better integration of XAML and Direct2D

                                    I use Direct2D to render complex shapes and animations. I would like to include them in my XAML layouts. The existing solutions like SwapChainPanel have many limitations like -
                                    - transparency
                                    - layering XAML-Direct2d-XAML is not possible
                                    - Direct2D effects cannot be applied to XAML content (e.g. Text)
                                    - etc.

                                    One solution would be that XAML finally switches to Direct2D for the rendering of shapes and controls. This would surely make the integration with Direct2D content much easier.

                                    4 votes
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                                      0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Allow base application container to be see-through

                                      I request the Windows team to provide us with a way to make parts of the core window see-through, so applications behind it can be seen; the ability to apply the transparency effect to the base container, making portions of our application see-through to the desktop.

                                      In other words, I want to be able to create designs such as this: http://i.imgur.com/27fUxtM.jpg (notice the left side of the application, where there is transparency and part of the desktop (which is immediately behind the application) can be seen through).

                                      Providing more design options, allows us to diversify our application's interface designs and…

                                      3 votes
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                                        0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
                                      • x:Bind To ImageSource Support Support System.Uri

                                        When using the old style binding ({Binding}) of an Image.Source property to a view model property, the vm property can be either a string or a Uri (in additon to an actual image source), implicit conversion is done.
                                        When using {x:Bind} it appears only strings are supported for implicit conversion. Trying to bind to a Uri will either throw an exception or give a compiler error (I can't remember which) and certainly won't display an image.

                                        Code analysis will often warn if you expose a properlty as a uri using a string type (can be ignored, but CA is giving…

                                        3 votes
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                                          0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →

                                          We understand this feedback. With the Anniversary Edition SDK, we enable ‘function bindings’ which can help to ease some of this that you can essentially call your own conversion methods in the binding like {x:Bind ConvertToUri(’’)} and write whatever code you want in the conversion function. We will continue to look at best areas for implicit converters though.

                                        • XAML mesh transform

                                          Allow XAML content to be transformed in non-rectangular fasion. Here is an example of how it is done in iOS: http://darrarski.pl/2014/05/mesh-transforms-ios/

                                          This would allow many interesting things without having to do it in Direct3d (and kinda re-implement XAML).

                                          3 votes
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                                            0 comments  ·  XAML APIs (WinRT)  ·  Flag idea as inappropriate…  ·  Admin →
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