Exception in Queue while removing an element ?

Question

I have a queue carrying class objects.Each class object has 3 string properties.In a loop i am checking with an If condition, on one of the class properties and on that basis i want to remove(dequeue) an object.
Suppose in c#.net and some pseudo code following is the scenario.
Foreach Loop to iterate through queue items
if myClassObj==(int)Class.Property1.ToString()
{
queue.Dequeue(this)
}
EndLoop
I get an exception saying that "Collection was modified after the enumerator was instantiated." Any one got idea about this? and also any alternates are welcome.Cheers

knights · Answer

Thanks any way for the answer.But i still am looking as I stated that i have an If (Line 2) condition which will be deciding the Dequeue operation the link you replied has a solution which is doing dequeue without a condition.Lets review here again. Foreach Loop to iterate through queue items if myClassObj.Property1==(int)Class.Property1.ToString() { queue.Dequeue(this) } EndLoop

Subhendu De · Answer

see the following link. http://stackoverflow.com/questions/2214446/how-can-i-modify-a-queue-collection-in-a-loop If problem doesn't solve ping me again. Thanks.....