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DelegateCommand<T>.RaiseCanExecuteChanged Method

Raises CanExecuteChanged on the UI thread so every command invoker can requery to check if the command can execute.

Note that this will trigger the execution of CanExecute(T) once for each invoker.

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

function raiseCanExecuteChanged();
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