这是线程/后台工作设计为一个C＃WPF应用程序是否正常？ [英] Is this thread/background worker design for a C# WPF application OK?

问题描述

作为新来使用线程等在用户界面的，可我问的是下面这个简单的设计，似乎确定。请参阅在这里链接关系图图片

Being new to using threads etc in UI's, can I ask is the following simple design seem OK. Refer to diagram image at link here

在特定的：

一）使用的BackgroundWorker和放大器; BackgroundWorker的ProgressChanged有一个单独的线程聚合器的工作。所以，我需要一个自定义类/类型有所有我需要从聚合线程传递回UI线程我假设数据。

a) use of backgroundworker & backgroundworker ProgressChanged to have the aggregator work on a separate thread. So I would need a custom class/type that had all the data I'd need to pass back from the aggregator thread to the UI thread I assume.

二）创建聚合在一个单独的线程，以确保SharpPCap / WinPcap的回调方法是在不同的线程。因此，这捕获管理器线程分组结果写入到一个共享的缓存。我假设在这里，如果code可以看到缓存变量，它们都可以访问它，不论他们是在跑？哪个线程

b) create a separate thread within the aggregator to ensure that the SharpPCap/WinPCap callback method is in a different thread. So this Capture Manager thread writes packet results to a shared Buffer. I'm assuming here that if the code can see the buffer variable that they can both access it, irrespective of which thread they're running in?

感谢

推荐答案

我有几个建议：

1. 我不建议使用一个BackgroundWorker和ProgressChanged这一点。既然你想民意调查和汇总每隔1秒，我建议只使用一个定时器（可能是DispatcherTimer）。您可以使用 Dispatcher.BeginInvoke 当元帅的电话返回到UI线程，如果你有这个运行在一个单独的线程（你也可以使用一个UI线程基于定时器，如果你想）。

1. I wouldn't recommend using a BackgroundWorker and ProgressChanged for this. Given that you want to "poll and aggregate" every 1 second, I'd recommend just using a Timer (probably a DispatcherTimer). You can use Dispatcher.BeginInvoke to marshal the calls back onto the UI thread, if you have this run in a separate thread (you can also use a UI-thread based timer, if you want).

我会建议使用 ConcurrentQueue＆LT ; T＆GT; 持有，而不是一个列表的分组数据。这将$ P $与需要在你的名单锁定pvent你。如果你一定要坚持.NET＆LT版本;某些对象，但你需要同步到它访问（锁; 4，您可以使用名单，其中，T＆GT保护的读/写操作中的列表）。这两个线程就可以使用相同的集合，只要它是线程安全的或正确同步。

I'd recommend using a ConcurrentQueue<T> to hold your packet data, instead of a list. This will prevent you from needing locking around your list. If you must stick to versions of .NET <4, you can use a List<T>, but you'll need to synchronize access to it (lock on some object to protect read/write operations in the list). Both threads will be able to use the same collection, provided it's thread safe or synchronized correctly.

这篇关于这是线程/后台工作设计为一个C＃WPF应用程序是否正常？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！