情景：一个线程不断获取数据，另一个线程不断处理这些数据。
常规方法：数据列表加锁，两个线程获取锁，拿到操作权；类似代码如下：（不推荐）
static void Main(string[] args){lockClass l = new lockClass();for (int i = 0; i < 1000000; i++){l.Equeue(i.ToString());}}public class lockClass{Queue<string> currentQueue = new Queue<string>(10000000);//当前要插入数据的队列 static readonly object objlock = new object();FileStream f = new FileStream("D://1.txt", FileMode.Create, FileAccess.Write, FileShare.None);StreamWriter writer;public lockClass(){writer = new StreamWriter(f);var backgroundWorker = new BackgroundWorker();backgroundWorker.DoWork += backgroundWorker_DoWork;backgroundWorker.RunWorkerAsync();}void backgroundWorker_DoWork(object sender, DoWorkEventArgs e){while (true){lock (objlock){if (currentQueue.Count > 0){var item = currentQueue.Dequeue();Console.WriteLine(item);writer.WriteLine(item);}}}}public void Equeue(string item){lock (objlock){currentQueue.Enqueue(item);}}}
方法3：用微软提供的BlockingCollection（线程安全的，可阻塞的资源的），个人理解就是资源安全的队列，并且当没有操作的时候（队列空闲的时候）不耗费资源，个人觉得和方法2原理类似（推荐使用）
static void Main(string[] args){var block = new blockingCollectionClass();for (int i = 0; i < 10000; i++){block.Add(i.ToString());}Console.ReadKey();
}public class blockingCollectionClass{BlockingCollection<string> blockingCollection = new BlockingCollection<string>();FileStream f = new FileStream("D://1.txt", FileMode.Create, FileAccess.Write, FileShare.None);StreamWriter writer;public void Add(string Item){blockingCollection.Add(Item);}public blockingCollectionClass(){writer = new StreamWriter(f);var backgroundWorker = new BackgroundWorker();backgroundWorker.DoWork += backgroundWorker_DoWork;backgroundWorker.RunWorkerAsync();}void backgroundWorker_DoWork(object sender, DoWorkEventArgs e){foreach (string value in blockingCollection.GetConsumingEnumerable()){Console.WriteLine(value);writer.WriteLine(value);}}}