Queues are useful for storing messages in the order they were received for sequential processing. Objects stored in a Queue<T> are inserted at one end and removed from the other. The capacity of a Queue<T> is the number of elements the Queue<T> can hold. As elements are added to a Queue<T>, the capacity is automatically increased as required.
Queue<string> numbers = new Queue<string>();
numbers.Enqueue("one");
numbers.Enqueue("two");
numbers.Enqueue("three");
numbers.Enqueue("four");
numbers.Enqueue("five");
// A queue can be enumerated without disturbing its contents.
foreach( string number in numbers )
{
Console.WriteLine(number);
}
Console.WriteLine("\nDequeuing '{0}'", numbers.Dequeue());
Console.WriteLine("Peek at next item to dequeue: {0}", numbers.Peek());
Console.WriteLine("Dequeuing '{0}'", numbers.Dequeue());
VB
Dim numbers As New Queue(Of String)()
Dim numbers As New Queue(Of String)()
numbers.Enqueue("one")
numbers.Enqueue("two")
numbers.Enqueue("three")
numbers.Enqueue("four")
numbers.Enqueue("five")
' A queue can be enumerated without disturbing its contents.
For Each number As String In numbers
Console.WriteLine(number)
Next
Console.WriteLine("\nDequeuing '{0}'", numbers.Dequeue())
Console.WriteLine("Peek at next item to dequeue: {0}", numbers.Peek())
Console.WriteLine("Dequeuing '{0}'", numbers.Dequeue())
