在C＃应用程序的任务之间共享收藏 [英] Share collections between tasks within c# application

问题描述

我有，我有，以填补一些收藏WPF应用程序：

I have a wpf application in which I have to fill some Collection :

 private async Task  FillList()
        {

             await Task.Factory.StartNew(() =>
                                           {
                gdpList = SimpleIoc.Default.GetInstance<ICrud<gdp_groupe>>().GetAll().ToList();
                MedecinGDP.AddRange(SimpleIoc.Default.GetInstance<ICrud<vue_medecin>>().GetAll());
                CodeGDP_Collection.AddRange(gdpList);
                FiltredParticipant.AddRange(SimpleIoc.Default.GetInstance<ICrud<fsign_fiche>>().GetAll());
            });
        }

问题是，集合仍然为空后，我调用此方法。当我改变这样的（synchrounous方式）的方式：

The problem is that the collections still empty after I call this method. when I change the method like this (synchrounous way):

private void  FillList()
            { 
                    gdpList = SimpleIoc.Default.GetInstance<ICrud<gdp_groupe>>().GetAll().ToList();
                    MedecinGDP.AddRange(SimpleIoc.Default.GetInstance<ICrud<vue_medecin>>().GetAll());
                    CodeGDP_Collection.AddRange(gdpList);
                    FiltredParticipant.AddRange(SimpleIoc.Default.GetInstance<ICrud<fsign_fiche>>().GetAll());

            }

集合变得充满！所以，我需要知道：

the collections become filled!! So I need to know :

我如何不同的任务之间共享收藏？

How can I share collections between different tasks?

推荐答案

而不是锁定的，我会建议使用一个集合，是线程安全的。现在，当在同一时间添加方法由多个线程/任务调用，收集可以变得无效。对我来说，它更容易使用比锁定例如线程安全的集合。此外，锁定是相当难用，当你收集使用多个类。

Instead of locking, I would advise to use a collection that is thread-safe. Now, when at the same time the Add method is called by multiple threads / tasks, the collection can become invalid. For me, it is easier to use thread-safe collections than lock for example. Also, lock is quite hard to use when your collection is used by multiple classes.

由于戴夫黑色在评论中指出的，线程安全的集合使用无锁同步这是必须快于采取锁，你可以阅读 MSDN 。

As Dave Black pointed out in a comment, the thread-safe collections use lock-free synchronization which is must faster than taking a lock, as you can read on MSDN.

一，你可以使用收藏的是 ConcurrentBag＆LT; T＆GT; ，它可以比作列表＆LT; T＆GT;

One of the collections you can use is ConcurrentBag<T>, which can be compared to List<T>.

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