Silverlight UI changes freezes the application

I have a SL application, and I have some events that once the user clicks, the app is doing some work. This work freezes the UI until the job is done (the job modifies the UI elements). How can I improve the performance of UI job in the SL app? I read that the UI threa开发者_如何学运维d is the only option.

Thank you

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You should use a BackgroundWorker to do your intensive work.

BackgroundWorker on MSDN

It's got an event (RunWorkerCompleted) that's executed on the main/UI thread after the work is completed.

Edit:

If your background job needs to update UI, you can use the Dispatcher:

Dispatcher.BeginInvoke on MSDN

Example:

Deployment.Current.Dispatcher.BeginInvoke(() => MessageBox.Show("This is executed on UI thread"));