Yield Break And Try Finally : yield « Data Structure « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Data Structure
3. yield

using System;
using System.Collections.Generic;
using System.Threading;
using System.ComponentModel;

    class MainClass{
        static IEnumerable<int> CountWithTimeLimit(DateTime limit){
            try{
                for (int i = 1; i <= 5; i++){
                    if (DateTime.Now >= limit){
                        yield break;
                    }
                    yield return i;
                }
            }finally{
                Console.WriteLine("Stopping!");
            }
        }
        static void Main(){
            DateTime stop = DateTime.Now.AddSeconds(20);
            foreach (int i in CountWithTimeLimit(stop))
            {
                Console.WriteLine("Received {0}", i);
                Thread.Sleep(100);
            }
        }
    }