By using the Visual Studio Unit Test Framework you don’t need to initialize the Dispatcher yourself. You are absolutely right, that the Dispatcher doesn’t automatically process its queue. You can write a simple helper method “DispatcherUtil.DoEvents()” which tells the Dispatcher to process its queue. C# Code: public static class DispatcherUtil { [SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)] … Read more
You can use Dispatcher even in a WinForms app. If you are sure to be on a UI thread (e.g. in an button.Click handler), Dispatcher.CurrentDispatcher gives you the UI thread dispatcher that you can later use to dispatch from background threads to the UI thread as usual.
You’ll have to have a ContextLoaderListener in your web.xml – It loads your configuration files. <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> You need to understand the difference between Web application context and root application context . In the web MVC framework, each DispatcherServlet has its own WebApplicationContext, which inherits all the beans already defined in the root WebApplicationContext. … Read more
It’s easier to directly get the CoreWindow from the non-UI thread. The following code will work everywhere, even when GetForCurrentThread() or Window.Current returns null. CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, <lambda for your code which should run on the UI thread>); for example: CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => { // Your UI update code goes here! }); You’ll need to reference Windows.ApplicationModel.Core … Read more
My gut tells me that Application.Current.Dispatcher will never change and is global to all threads in the current application, while Dispatcher.CurrentDispatcher may create a new instance of Dispatcher depending on the thread from which it was called. That is correct. Additionally, there is no point whatsoever in accessing Dispatcher.CurrentDispatcher from a non-UI thread. It will … Read more
The call to Thread.Sleep is blocking the UI thread. You need to wait asynchronously. Method 1: use a DispatcherTimer tbkLabel.Text = “two seconds delay”; var timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(2) }; timer.Start(); timer.Tick += (sender, args) => { timer.Stop(); var page = new Page2(); page.Show(); }; Method 2: use Task.Delay tbkLabel.Text = … Read more
PyPI packages As of January 2022, these are the event-related packages available on PyPI, ordered by most recent release date. pluggy 1.0.0: August 2021 pymitter 0.3.1: June 2021 zope.event 4.5.0: Sept 2020 python-dispatch 0.1.31: Aug 2020 RxPy3 1.0.1: June 2020 Louie 2.0: Sept 2019 PyPubSub 4.0.3: Jan 2019 pyeventdispatcher 0.2.3a0: 2018 buslane 0.0.5: 2018 PyPyDispatcher … Read more
The first thing is to understand that, the Dispatcher is not designed to run long blocking operation (such as retrieving data from a WebServer…). You can use the Dispatcher when you want to run an operation that will be executed on the UI thread (such as updating the value of a progress bar). What you … Read more