{
(SendOrPostCallback d, Object state)
// Call BeginInvoke with the cached priority. Note that BeginInvoke // preserves the behavior of passing exceptions to // Dispatcher.UnhandledException unlike InvokeAsync. This is // desireable because there is no way to await the call to Post, so // exceptions are hard to observe.}
_dispatcher.BeginInvoke(_priority, d, state);
来源: http://blog.csdn.net/wpwalter/article/details/78370706