BlockingCollectionExample.cs

var queue = new BlockingCollection<object>();

// ... meanwhile some other thread is adding to the queue
Task.Run(() => 
{
	for (int i = 0; i < 10; i++)
		queue.Add(i);
	
	queue.CompleteAdding();
});

foreach (var item in queue.GetConsumingEnumerable())
{
	// do something with item
	item.Dump();
}