C# concurrentqueue dequeue problem

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Hi
Can someown help me understand my problem?
I have declare a Concurrent Queue and when i enqueus to the queue, everything seems allright.
But when i de-queue it seems like its the same object being copied multiple times.

What am i doing wrong :)

C#

private void OnDequeue()
{
 try
 {
  List<MicronOptics.Hyperion.Communication.PeakData> items = new     List<MicronOptics.Hyperion.Communication.PeakData>();
  MicronOptics.Hyperion.Communication.PeakData item;

  var count = this.collection.Count();

  while (items.Count() != count)
  {
   if (this.collection.TryDequeue(out item))
    items.Add(item);
  }


 }
 catch (Exception)
 {
  Trace.TraceError("Unexpected error occured doing dequeue");
 }    
}

What I have tried:

I have try to insert a break point near the enqueue syntax, to make sure the problem isn't already an issue before its in the queue.
Inside my PeakData object i have an increasing int value, it is increasing, so my conclusion is that it is a problem with my dequeuing.

Posted 22-Feb-16 11:27am

JacobSV

Updated 22-Feb-16 18:12pm

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Shmuel Zang · Accepted Answer · 2016-02-22T18:12:00

Maybe the problem is when you enqueue the items. Maybe you enqueue references to the same object.

For instance, look at the following code:

C#

class MyClass
{
    public int a;
}

C#

MyClass c = new MyClass();

ConcurrentQueue<MyClass> cq = new ConcurrentQueue<MyClass>();

c.a = 1;
cq.Enqueue(c);

c.a = 2;
cq.Enqueue(c);

MyClass c1;
MyClass c2;
cq.TryDequeue(out c1);
cq.TryDequeue(out c2);

After running the code, you can see that c1 is equal to c2...