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Wpf Shutdown Application From Another Thread


Thanks Dharmendra Baghel - Thursday, July 14, 2011 5:52:53 AM very nice article. If you are going to run a DispatcherTimer in a unit test, you need to be sure to give it a priority higher than the default value of 'Background'. Internally VerifyAcess is invoked and once it verifies that calling code is different from the one which controls the application, it throws the “InvalidOperationError” exception. That method kicks off the whole process by spawning a thread which executes the BeginExecuteTestAsync method and then waiting for that thread to die.

As the WPF application runs , Dispatcher class accepts incoming requests and executes them one at a time. I have a query about DispatcherTimer. Wednesday, August 17, 2011 3:36 PM Reply | Quote 0 Sign in to vote You can't use CurrentDispatcher, since that may not be the "correct" dispatcher when not on a UI Can clients learn their time zone on a network configured using RA? http://stackoverflow.com/questions/23958345/binding-a-new-dispatcher-to-a-thread-in-wpf

Wpf Shutdown Application From Another Thread

Thread Synchronization Techniques - ReaderWriterLo... While constructing the calendar (for the first time) the dispatcher is being supspended, the session error occurs and wants to show the login dialogue. Search Catalog .NET Framework error in العربية (Arabic): Cannot perform requested operation because the Dispatcher shut down. Linux questions C# questions ASP.NET questions fabric questions SQL questions discussionsforums All Message Boards...

One reasonable scenario in which a DispatcherTimer might be used outside of a WPF application is if it happens to be running within a unit test. On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack? Secondly in your second example of list box, the box gets update after full count not one by one makes completely responsive UI for that time. Contact us about this article Reporter Sven Kloppenburg (skloppenburg) Created Jun 28, 2013 1:04:15 PM Updated Jul 5, 2013 5:30:27 PM Resolved Jul 5, 2013 5:30:27 PM Priority Normal Type Exception

shoe lift for men - Monday, April 1, 2013 6:46:13 PM Nice article .helped a lot understanding the concept of Dispatcher ch sandeep kumar - Thursday, May 9, 2013 11:30:21 AM asked 6 years ago viewed 16268 times active 6 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Linked 4 Make wpf UI responsive when button click is performed Ideally I want to have one dedicated thread which is responsible for out of band notifications like the splash and popup "toasters". Source Operator ASCII art Would we find alien music meaningful?

Thread Synchronization Techniques - Monitor Thread Synchronization Understanding Dispatcher in WPF ► October (19) Powered by Blogger. In WPF, a DispatcherObject can only be accessed by the Dispatcher it is associated with. Most often priority value “Background” is used for application specific custom logic. As I said above, the Dispatcher isn't really multithreaded; it only gives the illusion of it, because it does run delegates you pass to it at another time.

Application Current Shutdown Not Working

Dispatcher class is pretty dense with lots of properties and methods. does our code means UI code only? Wpf Shutdown Application From Another Thread In the click of event of button, I have initialized a new thread. Begininvokeshutdown C# I end up with 2 Dispatchers the Main Ui dispatcher and the "Splash" Dispatcher).

share|improve this answer edited Sep 21 '10 at 20:55 answered Sep 21 '10 at 17:03 Alex Paven 4,16121022 @Alex Paven: Thank you very much! the one on MSDN certainly hadn't helped me understand. It works 100% for the 20 or so other scenarios and results 100% of the time in the above exception for this one; at least it's consistent! Below is my test code. Dispatcher Run

protected override void ExecuteTestAsync() { Debug.Assert(base.IsRunningOnWorkerThread); MyLibLib.MyLib m = new MyLibLib.MyLib(); m.Register(); m.MyEvent += new MyLibLib.IMyLibEvents_MyEventHandler(OnMyEvent); m.TriggerEvent(); // OnMyEvent does NOT get called! Getting back to the example which I gave in the beginning, in that we were trying to update the UI through code which was running on a different thread. Vikas Gupta - Sunday, February 3, 2013 2:45:18 PM Super Stuff Man Thanks a lot Carry on good work Gaurav Puri - Friday, March 1, 2013 3:58:03 PM Great! Thread Synchronization Techniques - Semaphore Thread Synchronization Techniques - ReaderWriterLo...

I'd use the Dispatcher only when the code really only deals with the View aspect of an application - i.e. The following five steps show how it works. BeginInvoke is a hack - but it basically delays the message call until the dispatcher is "ready" again.

To simulate your code, I did: Thread t = new Thread(new ThreadStart(delegate() { Thread.Sleep(50000); })); t.Start(); Application.Current.Dispatcher .BeginInvokeShutdown(System.Windows.Threading.DispatcherPrio‌rity.Normal);.

It has an active Dispatcher processing its tick messages and all is well. Here are the setup and test methods, based on the NUnit 2.4 framework: ///

/// Initializes data used in the test. /// [SetUp] public void ConfigureTickerSettings() { TimeSpan interval The BeginExecuteTestAsync method is responsible for solving the chicken and egg problem of starting the Dispatcher and executing the test method which requires an active Dispatcher (remember, Dispatcher.Run is a blocking It is important to note that the Ticker instance being tested is created in this method.

Items with high priority value will be executed before any other items with low priority values. But before we take a deep dive, just try to keep in mind the below mentioned points about STA model. The problem I face is the second time I try and do this the Dispatcher complains that it has been shut down. Dispatcher up vote 27 down vote favorite 18 In my WPF application I need to do an async-operation then I need to update the GUI.