wpf - DevExpress and SimpleMvvmToolkit - Serialization error -

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i have devexpress dxgrid bound observablecollection of viewmodels (based on simplemvvmtoolkit). viewmodel has 2 properties exposed (a string , boolean) , few other properties exposed base class (viewmodeldetailbase), 1 of them model behind viewmodel.

everytime use grid modify contents of 1 of properties (e.g. boolean value), error saying "the type xxx cannot serialized.." (xxx type of model) followed suggestion use datacontractattribute circomvent issue. not sure how , solution. maybe should read on it, why serialization needed here??

anyway, hope can shed light on this. i'd appreciate pointers me looking in right direction.

edit: since situation intricate post relevant code here, made sandbox project reproduces error. can find via this wetransfer link.

best regards, ~rob

thanks great of simple mvvm toolkit community found out solution simple.

in simple mvvm toolkit, viewmodel needs serializable because gets cloned. roll-back data when action canceled. reason viewmodel not cloned whas because "model" property missing default (parameter-less) constructor.

there's no need decorate viewmodel , properties [datacontract] or [datamember].

i hope helps others.


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