Queue(T) Class represents a first-in, first-out collection of objects.

  
using System;
using System.Collections.Generic;

class Example
{
    public static void Main()
    {
        Queue<string> numbers = new Queue<string>();
        numbers.Enqueue("one");
        numbers.Enqueue("two");
        numbers.Enqueue("three");
        numbers.Enqueue("four");
        numbers.Enqueue("five");

        foreach( string number in numbers )
        {
            Console.WriteLine(number);
        }

        Console.WriteLine(numbers.Dequeue());
        Console.WriteLine(numbers.Peek());
        Console.WriteLine(numbers.Dequeue());
        Queue<string> queueCopy = new Queue<string>(numbers.ToArray());

        foreach( string number in queueCopy )
        {
            Console.WriteLine(number);
        }
        string[] array2 = new string[numbers.Count * 2];
        numbers.CopyTo(array2, numbers.Count);
        Queue<string> queueCopy2 = new Queue<string>(array2);

        foreach( string number in queueCopy2 )
        {
            Console.WriteLine(number);
        }

        Console.WriteLine(queueCopy.Contains("four"));

        queueCopy.Clear();
        Console.WriteLine("queueCopy.Count = {0}", queueCopy.Count);
    }
}

1.	Put elements into a queue
2.	Put user-defined objects to Queue collection
3.	Implements the queue data type using an array
4.	A queue class for characters
5.	illustrates the use of a Queue
6.	Queue test
7.	Add exception handling to the queue classes
8.	Demonstrate the Queue class
9.	Priority Queue
10.	Priority Queue (2)
11.	Dequeue
12.	Implements a non-locking queue
13.	Task queue
14.	Cyclic Queue
15.	Syncronized Queue

Queue(T) Class represents a first-in, first-out collection of objects. : Queue « Collections Data Structure « C# / C Sharp

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