Источник:
https://blogs.msdn.microsoft.com/mfp...mand-on-forms/
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Chain of command now supports even more extension scenarios on forms. It is now possible to wrap: Methods on the root of the form. Methods on controls. Methods on data sources. Methods on fields on data sources. So far you can only wrap system methods on the latter 3, i.e. methods that are defined on...
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Источник:
https://blogs.msdn.microsoft.com/mfp...mand-on-forms/