Silverlight - 在非UI线程中使用Dispatcher更新UI对象

象WinForm编程一样，Silverlight中的UI对象，只能通过UI线程来更新。不同的是Silverlight提供了一个Dispatcher对象，可以方便的将background线程对UI对象的操作marshal到UI线程上。而且，可以使用任意UI对象上的Dispatcher来更新任意UI对象:

because Silverlight has a single UI thread, it has a single Dispatcher object that holds a queue of work items for the UI. Using the Dispatcher will allow you to update the UI from a non-UI thread.

from - http://msdn.microsoft.com/en-us/magazine/cc721609.aspx

You don't have to use the Dispatcher property of the object you intend to update; you can use Dispatcher on any UI object to marshal the call to the UI thread.

from - http://www.wintellect.com/CS/blogs/jprosise/archive/2008/03/26/threading-and-marshaling-in-silverlight-2-0.aspx

以上链接中有代码示例。