What is the use of a Dispatcher Object in WPF?

Question

What is the use of a Dispatcher Object in WPF?

Answer 1

A dispatcher is often used to invoke calls on another thread. An example would be if you have a background thread working, and you need to update the UI thread, you would need a dispatcher to do it.

Here is a nice little write up and example to help you: http://www.elucidweb.com/blog/PermaLink,guid,e60bf668-539c-4532-b90a-f8c35c356edf.aspx