• I have an object in a portable class library which implements IDynamicMetaObjectProvider.  I wish to consume this object via XAML bindings in both WPF and a Windows Store app.  The implementation is based on this article, http://msdn.microsoft.com/en-US/vstudio/ff800651.aspx, and has been working brilliantly in WPF for some time.  However, in the Windows Store app I'm getting nowhere; IDynamicMetaObjectProvider.GetMetaObject is never called.  The XAML binding is looking on the correct object but just gives me a 'BindingExpression path error: 'Effort' property not found' message.  Any suggestions?  Is there a Windows Store sample that shows this working?
    Tuesday, February 18, 2014 6:42 PM

All replies

  • Hi,

    Would mind sharing a simple project to SkyDrive so that we can test it.

    Best Wishes!

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    Thursday, February 20, 2014 2:46 AM
  • Hi Anne,

    Here's a link to a sample project:-


    It couldn't be simpler so I suspect this is something that was never implemented in the WinRT binding engine and that it never checks for IDynamicMetaObjectProvider.

    In which case, could you let me know how I might implement dynamic properties that can be bound in XAML?

    Many thanks


    Thursday, February 20, 2014 12:36 PM
  • I've updated the project and added tests for DynamicObject (doesn't work), ExpandoObject and Indexing.


    The initial binding to an ExpandoObject works but the bindings aren't then listening for PropertyChanged events.  Indexing works but is not what I want.

    ExpandoObject implements IDynamicMetaObjectProvider so what is going on?


    Thursday, February 20, 2014 7:32 PM
  • Hi there, 

    Unfortunately debugging your code is beyond the scope of a forum post. Please feel free to open a support incident. Please go here: http://aka.ms/storesupport.



    Wednesday, March 5, 2014 8:31 AM