just a small clarification I need to call a ria service every minute in the background of my silverlight application.
My idea is to initialize a timer on the App and call the Ria Service on elapsed of the timer. If I use a Threading.Timer I get an exception of invalid thread. What would be the best way to do this?
I also tried the DispatcherTimer, but how does a DispatcherTimer affects the UI? Can it work on the background?
You should use DispatcherTimer. And make sure to create it on UI thread.