How to empty a BlockingCollection
Solution 1
Possibly use the overload of GetConsumingEnumerable
that takes a CancellationToken
; then, if anything goes wrong from the producing side, it can cancel the consumer.
Solution 2
I'm using this extension method:
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);
}
}
I'm wondering if there's a better, less hacky, solution.
Solution 3
Just take out all remaining items:
while (collection.TryTake(out _)){}
Solution 4
This worked for me
while (bCollection.Count > 0)
{
var obj = bCollection.Take();
obj.Dispose();
}
Take()
removes from the collection and you can call any clean up on your object and the loop condition does not invoke any blocking calls.
Solution 5
BlockingCollection<T> yourBlockingCollection = new BlockingCollection<T>();
I assumed you mean clear your blocking collection. Jon's answer is more appropriate to your actual question I think.
Jon
Updated on July 24, 2022Comments
-
Jon almost 2 years
I have a thread adding items to a
BlockingCollection
.On another thread I am using
foreach (var item in myCollection.GetConsumingEnumerable())
If there is a problem I want to break out of my foreach and my method and clear whatever is left in the
BlockingCollection
however I can't find a way to do it.Any ideas?