添加到通用字典会导致IndexOutOfRangeException

问题描述

我在某些Task中使用字典。

I'm using a dictionary inside of some Task.

从逻辑上讲，我已经对其进行了设置，以使我的键永远不会发生冲突，尽管有时在我添加到字典中时会出现此异常。

Logically I have set it up so that my Keys will never clash, though sometimes when I am adding to the dictionary I get this Exception.

Index was outside the bounds of the array.
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at Rpc.<MapIntoRpc>b__4[T](Object x) in Rpc.cs:line 113
   at System.Threading.Tasks.Task`1.InvokeFuture(Object futureAsObj)
   at System.Threading.Tasks.Task.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()

我知道多次尝试删除或添加相同的Key可能会带来并发问题，但是我已经从算法上进行了解释。

I understand there can be concurrency issues from trying to remove or add the same Key multiple times, but I have accounted for that algorithmically.

是什么原因导致添加有时失败？
最好的解决方法是什么？

What causes the add to sometimes fail?What is the best way to work around that?

推荐答案

您应该已经阅读了文档。它说的是：

You should have looked to the documentation. That what it says:

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