Question

I am new to event and delegates. How can I implement an enqueued event for an object of type Queue<T>?

I am using C# and .Net 4.0

Answer 1

You can encapsulate the Queue class with your own class, something like:

class MyQueue<T>
{
    private readonly Queue<T> queue = new Queue<T>();     
    public event EventHandler Enqueued;     
    protected virtual void OnEnqueued()     
    {         
        if (Enqueued != null) 
        Enqueued(this, EventArgs e);     
    }     
    public virtual void Enqueue(T item)     
    {         
        queue.Enqueue(item);         
        OnEnqueued();     
    }     
    public int Count 
     {
             get 
             { 
                     return queue.Count; 
             }
     }
    public virtual T Dequeue()     
    {
            T item = queue.Dequeue();         
            OnEnqueued();
            return item;
        }
}