Updating ObservableCollection from non UI thread

Question

I am working on a Windows 8 Store app. I have a timer that calls a delegate every two minutes and makes an async web request. The resulting data is added to an observablecollect

Answer 1

It's usually easier to have the UI thread call background operations rather than having the background operations update the UI thread.

So, I recommend you use DispatcherTimer, and then you won't need to use Dispatcher at all.