DelegateCommand<T>.OnCanExecuteChanged Method

Raises CanExecuteChanged on the UI thread so every command invoker can requery CanExecute(Object) to check if the CompositeCommand can execute.

Namespace:  Microsoft.Practices.Composite.Presentation.Commands
Assembly:  Microsoft.Practices.Composite.Presentation (in Microsoft.Practices.Composite.Presentation.dll)

function onCanExecuteChanged();
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