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Dispatcher.CurrentDispatcher vs. Application.Current.Dispatcher
Dispatcher.CurrentDispatcher gets the dispatcher for the current thread. So, if you're looking for the UI thread's Dispatcher from a background process, don't use this. Application.Current.Dispatcher will always give you the UI thread's dispatcher, as this is the thread that spins up the sole Application instance.
operating system - how dispatcher works? - Stack Overflow
The dispatcher jumps to the appropriate PC counter as listed in the task that now has its full context established on the cpu. To (over)simplify in summary; the dispatcher doesn't need registers, all it does is write the current cpu state to a predetermined memory location, load another processes' cpu state from a predetermined memory location ...
What is the use of a Dispatcher Object in WPF? - Stack Overflow
This class provides a property named Dispatcher that returns the Dispatcher object associated with the WPF element. The Dispatcher class is used to perform work on its attached thread. It has a queue of work items and it is in charge of executing the work items on the dispatcher thread.
System.Windows.Threading.Dispatcher and WinForms?
One can get dispatcher of WinForm UI thread: Dispatcher dispatcherUI = Dispatcher.CurrentDispatcher; in either button click event handler or anywhere else (in form constructor) And then use it to execute on UI from other threads, see more details on example below in my answer:
c# - Dispatcher.Dispatch on the UI thread - Stack Overflow
However when updating the UI from inside a Task you will need to use the dispatcher. In this case it is updating the UI, but i've seen some scenarios where people update UI using Dispatcher.Invoke or BeginInvoke from the different Thread. Invoke will block the calling thread while it is performing the action and BeginInvoke will not.
Change WPF controls from a non-main thread using Dispatcher.Invoke
Application.Current.Dispatcher.BeginInvoke( DispatcherPriority.Background, new Action(() => { this.progressBar.Value = 50; })); Information for other users who want to know about performance: If your code NEED to be written for high performance, you can first check if the invoke is required by using CheckAccess flag.
Invoking WPF Dispatcher with anonymous method - Stack Overflow
Look at the signature for Dispatcher.Invoke(). It doesn't take Action or some other specific delegate type. It takes Delegate, which is the common ancestor of all delegate types. But you can't convert anonymous method to this base type directly, you can convert it only to some specific delegate type. (The same applies to lambdas and method groups.)
c# - Dispatcher.Invoke and propagating errors - Stack Overflow
Using a synchronous Dispatcher.Invoke will always propagate the exception to the caller. It is also very wasteful to use. If the caller is not a UI thread, the exception will never reach the dispatcher, and depending on the threading API used, it will either be swallowed or thrown and crash the process.
cqrs - What are the differences between the Command Dispatcher and ...
The Command Dispatcher and Mediator patterns (as well as the Event Aggregator Pattern) share similarities in that they introduce a mediating component to decouple direct communication between components. While each can be used to achieve use cases for which the other pattern was conceived, they are each concrete patterns which differ in their ...
Does Dispatcher.Invoke block on the calling thread?
Have a look here: Dispatcher.Invoke from a new thread is locking my UI. Here's some more wisdom: Invoke is synchronous and BeginInvoke is asynchronous. The operation is added to the event queue of the Dispatcher at the specified DispatcherPriority.
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