无法在多线程中操作ObservableCollection [英] Can not operate ObservableCollection in multi threads

问题描述

似乎ObservableCollection仅支持从UI线程添加，删除，清除操作，如果由NO UI线程操作，则抛出不支持异常.我试图重写ObservableCollection的方法，不幸的是，我遇到了很多问题. 任何人都可以为我提供一个可以由多线程操作的ObservableCollection示例吗? 非常感谢！

It seems the ObservableCollection only support add, remove, clear operation from the UI thread, It throw Not Support Exception if it is operated by a NO UI thread. I tried to override methods of ObservableCollection, unfortunatly, I met lots of problems. Any one can provide me a ObservableCollection sample which can be operated by multi-threads? Many thanks!

推荐答案

使用

Using the link provided by Kent, you could use the following code to modify a collection across threads:

while (!Monitor.TryEnter(_lock, 10))
{
   DoEvents();
}

try
{
   //modify collection
}
finally
{
   Monitor.Exit(_lock);
}

但是，如果您只是想修改原始线程上的集合，则可以尝试使用UI线程的回调.我通常会这样:

If however you're just looking to modify the collection on your original thread you can try using a callback to your UI thread. I normally do something like this:

this.Dispatcher.Invoke(new MyDelegate((myParam) =>
{
  this.MyCollection.Add(myParam);
}), state);

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