使用调度程序。调用使我的线程安全吗?

In my WPF app I have a long running upload running, which raises progress events as it goes which updates a progress bar. The user also has a chance of cancelling the upload, or it might go wrong. These are all async events, so they need to be executed using Dispatcher.Invoke in order to update the UI.In my WPF app I have a long running upload runn