如何清除/清空 c# 中的 BlockingCollection

Question

I have a thread which is adding items to a BlockingCollection. I want to clear the BlockingCollection. Can somebody help me with this?

Answer 1

You may need to read all the items from the BlockingCollection and assign to Discards

while (collection.TryTake(out _)){}

Answer 2

Possibly use the overload of GetConsumingEnumerable that takes a CancellationToken; then, if anything goes wrong from the producing side, it can cancel the consumer.

And you can use it

 public static void Clear<T>(this BlockingCollection<T> blockingCollection)
{
    if (blockingCollection == null)
    {
        throw new ArgumentNullException("blockingCollection");
    }

    while (blockingCollection.Count > 0)
    {
        T item;
        blockingCollection.TryTake(out item);
    }
}

And you can even use this site

Use ForEach to Remove Items in a BlockingCollection