using System;using System.Collections;using System.Windows.Forms;namespace WindowsApplication1{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { Queue days = new Queue(); days.Enqueue("Sunday"); days.Enqueue("Monday"); days.Enqueue("Tuesday"); days.Enqueue("Wednsday"); days.Enqueue("Thursday"); days.Enqueue("Friday"); days.Enqueue("Saturday"); MessageBox.Show (days.Dequeue().ToString ()); if (days.Contains("Monday")) { MessageBox.Show("The queue contains Monday"); } else { MessageBox.Show("Does not match any entries"); } } }}