Andrew ThompsonAndrew Thompson

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      We’ll send you updates on this idea

      An always happy Friday as I just got the TFS complete email :) As this hasn’t hit an insider preview SDK, i’m going to mark this still as “working on it” still BUT … this will be coming to an insider build near you!

      This item heart is markup extensions. There is one item that will not be there however that is relevant to markup extensions, IServiceProvider. I created a new item for that but we are working on this item [https://wpdev.uservoice.com/forums/110705-universal-windows-platform/suggestions/19416094-iserviceprovider-for-markup-extensions-for-wpf-par]. We have created a new one and we are working on that (that includes IProvideValueTarget and INameScope) but feel we have enough to ship this and mark this larger work item done and we do point out in reference to more work items need to happen, namely the work around IServiceProvider.

      Also XamlServices.Load / Save isn’t directly related to markup extenstion so we’re viewing that…

      Andrew ThompsonAndrew Thompson commented  · 

      @Tim - just sent you an email. Thanks for looking at this!

      I'm ******* my head against a wall trying to port a well known WPF control library over to UWP. We were cross-platform to Silverlight/WPF so were previously able to implement MultiBinding, DynamicResource and x:Static all as MarkupExtensions. This made our lives much much easier.

      Adding even just a very simplistic version of MarkupExtension to UWP would make the impossible, possible here. Many of the UWP quirks we've worked around but this one really is causing us a headache.

      Do please give us an update as to expected delivery date. I know it's under investigation now but I cannot emphasise enough how much this would mean to us for supporting the platform.

      Andrew ThompsonAndrew Thompson supported this idea  · 

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