Blimey - this is an old thread!

TBH I've not used MVVM Light but a quick read seems to suggest that it's DespatcherHelper class might be worth looking at ?
http://msdn.microsoft.com/en-us/magazine/dn630646.aspx

Don't think INotifyPropertyChanged in itself will help - you still need to run the task on another thread to keep the UI responsive...

HTH, Happy New Year....

>Am I right in assuming that this can be done implementing MVVMLight? I understood that there is a INotifyPropertyChanged. It allows the "databindings" to be updated whenever a property changes (quoting Laurent Bugnion on Pluralsight).
>
>Would that be a newbie thing, or should I wait until I grow up?
>
>
>>>>>It seems that just setting Status.Text=someValue from within a click event does not (vfp) refresh until the event is completed. How can this be done (in C#) if one wants to show the status of a multistage procedure by setting the Status.Text?
>>>>
>>>>If I understand correctly then you need to use a background worker to keep the UI responsive. e.g.:
>>>
>>>Right. Thank you very much. Was hoping for something simpler ;)
>>
>>Just saw your PM so you were already on the right track.
>>
>>In WPF everything is great but nothing is simple :-}
>>
>>WinForms had the Application.DoEvents which could have updated your TextBlock OK but the form would be otherwise unresponsive between calls.
>>Of course the downside of BackgroundWorker is that you have to ensure that, because the form is still responsive, the user cannot perform inappropriate actions whilst the task is running.