WPF Binding to DeriveSettable attribute?

CapableObjects Forums SupportForum WPF Binding to DeriveSettable attribute?

This topic contains 1 reply, has 1 voice, and was last updated by  efim 2 months, 4 weeks ago.

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  • #4381

    efim
    Participant

    Hi,

    I have a WPF Treeview in my project bound to a model class. Everything worked before I made the bound Attribute in the model class DerivedSettable.

    Now I get error message:
    TwoWay- or OneWayToSource-Bindings don’t function with readonly property “XXX” of type “Eco.Handles.RenderedTuple”.

    For some historical reasons I use EcoObjectDataProvider class with ExpressionHandle.

    At least 2 questions:
    - Why 2-ways binding is mentioned whereas I use explicitely OneWay-Binding?
    - Why does it not work with DeriveSettable atrtribute? I really need a derived Attribute on this place and on my opinion it should work with OnWay?

    /Efim

    #4382

    efim
    Participant

    I have solved it: it was really a 2-Ways Binding to an ExpressionHandle OCL-defined Column where one string constant was set under if-condition in OCL.

    /Efim

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