Cannot call SatisfyImports in a MEF/Prism Application

[Alexandre]

When trying to call:

CompositionInitializer.SatisfyImports(this);

I receive that message:

Cannot call SatisfyImports on a object of type 'x' because it is marked with one or more ExportAttributes.

In my ShellViewModel class, i have the following:

        public const string IsBusyPropertyName = "IsBusy";
        private bool _isBusy = false;
        [Export]
        public bool IsBusy
        {
            get { return _isBusy; }
            set
            {
                if (_isBusy == value)
                {
                    return;
                }
                _isBusy = value;
                RaisePropertyChanged(IsBusyPropertyName);
            }
        }
 
        [Import(typeof(IDataService), RequiredCreationPolicy = CreationPolicy.Shared)]
        public IDataService _DataService { get; set; }

If i comment the [Export] tag, everything works. Why this happens?
But i comment that tag, the import will not work.

Is there a way to bypass this?

Here is the url for the a simple demo that shows demostrate that issue:

http://www.brim.com.br/silverlight/mefsatisfyimports.zip

Thanks!

[Pavel Pavlov]

Hello Alexandre Costa,

Which control from the RadControls for Silverlight suite do you have an issue with ?

Kind regards,
Pavel Pavlov
the Telerik team

[Alexandre]

Hi Pavel,

In fact this problem is not related to Telerik components. I think that this problem is related to the MEF. I wonder if anyone has the same issue and found a solution. In the example, http://www.brim.com.br/silverlight/mefsatisfyimports.zip,  shows how this exception occurs.