System.InvalidOperationException: Collection was modified

Question

I am getting a following exception while enumerating through a queue:

System.InvalidOperationException: Collection was modified; enumeration opera

Answer 1

I think all you need to do is stop using the foreach and instead switch it over to a for loop

for(int i = 0; i < tpotActionQueue.Length; i++)
{
     TpotAction action = tpotActionQueue[i];

     if (action is WriteChannel)
     {
        channelWrites.Add((WriteChannel)action);
        lock(tpotActionQueue)
        {
           action.Status = RecordStatus.Batched;
        }
     }
}

Regards, Mike.