dispatcher

Update BindingList<> from a background Thread?

由 ↘锁芯ラ 提交于 2019-12-10 17:42:26
问题 I was wondering how I would use the Dispatcher in WPF to safely update my BindingList collection from another thread? I am also open for other solutions, Many Thanks, Kave 回答1: I prefer scheduling a Task to the UI thread. You can get the UI thread scheduler by calling TaskScheduler.FromCurrentSynchronizationContext while on the UI thread. MSDN has an example here. I generally prefer SynchronizationContext -based solutions instead of Dispatcher -based solutions because they are not tied to WPF

Why did dispatcher BeginInvoke fail where Control BeginInvoke succeed in C# Windows Forms app?

由 空扰寡人 提交于 2019-12-10 16:26:04
问题 I originally tried to use the Dispatcher class BeginInvoke method to show a message box on the main UI thread in my C# Windows Forms app. When I used that method the message box did not appear . I set a breakpoint inside the body of the delegate I passed to BeginInvoke() and it was never hit. I tried using both an Action delegate and a MethodInvoker delegate. No luck in either case. When I used the BeginInvoke method belonging to the Form object it worked fine . Why did the Dispatch version

C#, WPF, Automatically call Dispatcher.Invoke when needed?

由 一个人想着一个人 提交于 2019-12-10 13:24:50
问题 I have a program with a Geospace map embedded into it. The event handling for the map is handled on a separate thread to keep the map responsive (for example, the events that fire when the map is clicked). The problem I am having is when the map fires an event, my program needs to update some things in it's gui, and also call back into the map to handle placing pictures on the map. I tried wrapping the entire event handler method in this.Dispatcher.Invoke, which puts me back on the main UI

Struts2 的@Result注解

由 坚强是说给别人听的谎言 提交于 2019-12-10 11:56:09
@Result 注解的作用就是告诉程序我的 Action 返回什么。 例如： name: 返回标识，例如： location: 本地文件 type：返回类型 redirect:action处理完后重定向到一个视图资源（如：jsp页面），请求参数全部丢失，action处理结果也全部丢失。 redirect-action:action处理完后重定向到一个action，请求参数全部丢失，action处理结果也全部丢失。 chain:action处理完后转发到一个action，请求参数不会丢失，action处理结果不会丢失 dispatcher 为默认跳转类型，用于返回一个视图资源(如:jsp) json 返回json数据，使用json时，需要注解 @ParentPackage ( "json-default" ) 以上基于Convention插件 来源： oschina 链接： https://my.oschina.net/u/3358860/blog/3140413

PHP - call_user_function_array or Reflection class pass by reference?

由 别来无恙 提交于 2019-12-10 11:27:15
问题 I'm trying to dispatch request in MVC framework. I have a routing object that matches current URI against defined routes. If there is a match, it returns instance of Route object. Through that Route object I can access matched controller, method and method arguments. I can use it like this: $route->getClass(); name of controller class to instantiate $route->getMethod(); name of method to call $route->getArgs(); array holding arguments that should be passed to method I can also add new

Pause a window like MessageBox.Show()

由 最后都变了- 提交于 2019-12-10 11:19:47
问题 I have a scripting language implemented in WPF that allows a user to script multiple concurrent actions. These actions are implemented using async/await and all of them run on the main thread. I'm now introducing a step debugger into this script language. Currently, there is one window associated with the script engine and a different window for the step debugger. I'm trying to accomplish stopping processes in the engine window just before a scripted action executes while not blocking

聊聊dubbo的AllDispatcher

由 对着背影说爱祢 提交于 2019-12-10 07:24:13
序 本文主要研究一下dubbo的AllDispatcher Dispatcher dubbo-2.7.3/dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache/dubbo/remoting/Dispatcher.java @SPI(AllDispatcher.NAME) public interface Dispatcher { /** * dispatch the message to threadpool. * * @param handler * @param url * @return channel handler */ @Adaptive({Constants.DISPATCHER_KEY, "dispather", "channel.handler"}) // The last two parameters are reserved for compatibility with the old configuration ChannelHandler dispatch(ChannelHandler handler, URL url); } Dispatcher接口定义了dispatch方法，返回ChannelHandler AllDispatcher dubbo-2.7.3/dubbo-remoting

聊聊dubbo的ExecutionDispatcher

由 ☆樱花仙子☆ 提交于 2019-12-10 07:16:06
序 本文主要研究一下dubbo的ExecutionDispatcher ExecutionDispatcher dubbo-2.7.3/dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache/dubbo/remoting/transport/dispatcher/execution/ExecutionDispatcher.java public class ExecutionDispatcher implements Dispatcher { public static final String NAME = "execution"; @Override public ChannelHandler dispatch(ChannelHandler handler, URL url) { return new ExecutionChannelHandler(handler, url); } } ExecutionDispatcher实现了Dispatcher接口，其dispatch方法返回的是ExecutionChannelHandler ExecutionChannelHandler dubbo-2.7.3/dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache

Problems with dispatcher in C# console application

由 故事扮演 提交于 2019-12-09 23:43:44
问题 I need to invoke method runed on timer thread on right working thread. Invoke/BeginInvoke process is working for me. There are 2 threads which shares one inter thread data container for data exchange. One is filling queue, one shuld process the queue. Queue raises event if it is filled after empty state. All the problem is caused by timer, which open new thread on its elapsed event. I am using Dispatcher to dispatch on the right thread, but everything works, except this Dispatcher. :-) Please

backbone.js - working with the event dispatcher var dispatcher = _.clone(Backbone.Events)

由 北慕城南 提交于 2019-12-09 11:39:35
问题 In backbone.js documentation it says: To make a handy event dispatcher that can coordinate events among different areas of your application: var dispatcher = _.clone(Backbone.Events) Can anyone explain how to implement the dispatcher to communicate from one view to another? Where do I have to place the code in my app? 回答1: Here is a good article about using an event aggregator. Can anyone explain how to implement the dispatcher to communicate from one view to another? Where do I have to place
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