What type of Queue I should Use and How?

Question

I have one database stored on cloud that has table which I am accessing. The table has columns like "FileName", "ID" , etc etc. After accessing the database I am saving FileName in a datatable. This is an image database where FileName acts as a pointer to original image.

I have part of code that access database and downloads Image from database. I want one thread to perform task of accessing database and feeding it to the queue. Another thread will perform operations on data from queue and then that item will be removed.

I am trying to use BlockingCollections but not sure what type of Queue I should use. Can somebody help?

This is a classic Producer-Consumer pattern. Take a look at this question: http://stackoverflow.com/questions/1656404/c-sharp-producer-consumer — king_nak, Mar 31 '14 at 13:40

cat916 · Accepted Answer · 2014-03-31T14:04:24.227

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I think ConcurrentQueue is what you are looking for. For more information, ConcurrentQueue MSDN

EDIT :

You can use public bool TryDequeue(out T result) method. It basically implement try pattern to by pass an exception when it occurs.

edited Mar 31 '14 at 14:04

answered Mar 31 '14 at 13:34

cat916

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Can you please tell me what method in case of ConcurrentQueue works as Dequeue() – Gaurav K. Mar 31 '14 at 13:52
I was trying that method, but I am not sure what to pass as an argument? Like is this right: T item; queue.TryDequeue; – Gaurav K. Mar 31 '14 at 14:18
queue.TryDequeue(out item); – cat916 Mar 31 '14 at 14:22

score -1 · Answer 2 · answered Mar 31 '14 at 13:36

-1

You can make use of a Synchronized Queue. Synchronized is a thread safe wrapper for the standard Queue class.

answered Mar 31 '14 at 13:36

BBlake

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Not a great choice compared to `ConcurrentQueue`. – Lee Mar 31 '14 at 13:40

What type of Queue I should Use and How?

2 Answers2