How to lock a dictionary?

Question

I have a static dictionary in a multi thread application. class A Reads the dictionary and class B Removes from it. I want to lock dictionary when removing from it or reading fr

Answer 1

you can use lock

lock (DicThreads)
{
   // Any code here is synchronized with other
   // (including this block on other threads)
   // lock(DicThreads) blocks
}

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However, if you have a dictionary of threads in your application, you are probably doing it wrong. Read all about the Task-Based Asynchronous Pattern (TAP) here.

Stephen Cleary has wirtten a useful AsyncCollection class. Available in the Nito.AsyncEx package on NuGet.

If you need an asynchronous collection its a good candidate, it actually takes a ConcurrentBag/Stack/Queue or some other IProducerConsumerCollection to provide backing state.

Remember, as stated, you should not be managing the threads yourself, as illustrated in the question.