第一套代码将producer Consumer的逻辑写到from类里了，方便在demo的显示界面动态显示模拟生产和消费的过程。
第二套代码将producer Consumer的逻辑单独写到一个类中，使用委托的方法在from中回显生产消费的过程。
Demo中均以3个线程作为消费者，1个线程作为生产者为例。
由于是C#新手，有不对的地方望不吝赐教。
先贴下窗口截图，动态生产消费进度显示
第一套代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;namespace ProducerConsumerDemo
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){StopFlag = false;StartDemo();}private void button2_Click(object sender, EventArgs e){StopFlag = true;}public class TaskInfo{public int Index;public TaskInfo(){}public TaskInfo(int index){this.Index = index;}}private static bool StopFlag = false;private int ProducerNumber = 1;private int ConsumerNumber = 3;// 共用任务队列private Queue<TaskInfo> TaskQueue = new Queue<TaskInfo>();private Semaphore TaskSemaphore = new Semaphore(0, 256);private object myLock = new object();private void StartDemo(){StartProducer(ProducerNumber);Thread.Sleep(2000);StartConsumer(ConsumerNumber);}private void StartProducer(int num){for (int i = 0; i < num; i++){Thread t = new Thread(new ThreadStart(Producer));t.Name = "Producer_" + (i + 1);t.Start();}}private void StartConsumer(int num){for (int i = 0; i < num; i++){Thread t = new Thread(new ParameterizedThreadStart(this.Consumer));t.Name = "Consumer_" + (i + 1);t.IsBackground = true;t.Start(i + 1);}}// 线程间控件调用，需要使用委托public delegate void ProducerTextDelegate(string AddStr);public delegate void ComsumerTextDelegate(int Index, string AddStr);// 生产者private void Producer(){int i = 0;while (!StopFlag){TaskInfo Task = new TaskInfo(++i);lock (myLock) // 任务队列为临界资源，需要锁{TaskQueue.Enqueue(Task);}TaskSemaphore.Release(1); // 每添加一个任务，信号量加1string AddText = String.Format("Task {0} was Produced.\r\n", Task.Index);ChangeProducerText(AddText); // 修改textBox输出Thread.Sleep(1000);}}// 消费者private void Consumer(object data){int Index = (int)data;TaskInfo GetTask = null;while (true){TaskSemaphore.WaitOne();lock (myLock){GetTask = TaskQueue.Dequeue();}string AddStr = String.Format("Consumer {0} take Task {1}\r\n", Index, GetTask.Index);ChangeConsumerText(Index, AddStr);Random r = new Random();Thread.Sleep(r.Next(5) * 1000); // 休眠随机事件，模拟实际任务的每个任务的不同时常// 此处应为任务处理}}private void ChangeProducerText(string AddStr){if (textBox1.InvokeRequired){ProducerTextDelegate pd = new ProducerTextDelegate(ChangeProducerText);textBox1.Invoke(pd, new object[] { AddStr });}else{textBox1.AppendText(AddStr);}}private void ChangeConsumerText(int Index, string AddStr){TextBox currentTextBox = null;switch (Index){case 1:currentTextBox = this.textBox2;break;case 2:currentTextBox = this.textBox3;break;case 3:currentTextBox = this.textBox4;break;default:break;}if (currentTextBox.InvokeRequired){ComsumerTextDelegate cd = new ComsumerTextDelegate(ChangeConsumerText);currentTextBox.Invoke(cd, new object[] { Index, AddStr });}else{currentTextBox.AppendText(AddStr);}}}
}
第二套代码：
// Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;namespace ProducerConsumerDemo
{// 定义修改输出的委托public delegate void ShowTextDelegate(int Index, string Addstr);public partial class Form1 : Form{Work work = null;public Form1(){InitializeComponent();work = new Work();work.ShowTextEvent += new ShowTextDelegate(ChangeTextValue);}private void button1_Click(object sender, EventArgs e){ work.Start();}private void button2_Click(object sender, EventArgs e){work.Stop();}// new Work 中再起的子线程调用的ShowTextDelegate委托事件，所以需要委托才能调用textBox控件public delegate void ChangeTextDelegate(int Index, string AddStr);private void ChangeTextValue(int Index, string AddStr){TextBox ChangeTextBox = null;switch (Index){case 1:ChangeTextBox = this.textBox1;break;case 2:ChangeTextBox = this.textBox2;break;case 3:ChangeTextBox = this.textBox3;break;case 4:ChangeTextBox = this.textBox4;break;default:break;}if (ChangeTextBox.InvokeRequired){ChangeTextDelegate pd = new ChangeTextDelegate(ChangeTextValue);ChangeTextBox.Invoke(pd, new object[] { Index, AddStr });}else{ChangeTextBox.AppendText(AddStr);}}}}// Work.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;namespace ProducerConsumerDemo
{public class Work{public Work(){StopFlag = false;}public void Start(){StopFlag = false;StartDemo();}public void Stop(){StopFlag = true;}public class TaskInfo{public int Index;public TaskInfo(){}public TaskInfo(int index){this.Index = index;}}private static bool StopFlag = false;private int ProducerNumber = 1;private int ConsumerNumber = 3;private Queue<TaskInfo> TaskQueue = new Queue<TaskInfo>();private Semaphore TaskSemaphore = new Semaphore(0, 256);private object myLock = new object();public event ShowTextDelegate ShowTextEvent;private void StartDemo(){StartProducer(ProducerNumber);Thread.Sleep(2000);StartConsumer(ConsumerNumber);}private void StartProducer(int num){for (int i = 0; i < num; i++){Thread t = new Thread(new ThreadStart(Producer));t.Name = "Producer_" + (i + 1);t.Start();}}private void StartConsumer(int num){for (int i = 0; i < num; i++){Thread t = new Thread(new ParameterizedThreadStart(this.Consumer));t.Name = "Consumer_" + (i + 1);t.IsBackground = true;t.Start(i + 1);}}private void Producer(){int i = 0;while (!StopFlag){TaskInfo Task = new TaskInfo(++i);lock (myLock){TaskQueue.Enqueue(Task);}TaskSemaphore.Release(1);string AddText = String.Format("Task {0} was Produced.\r\n", Task.Index);ShowTextEvent.Invoke(1, AddText);Thread.Sleep(1000);}}private void Consumer(object data){int Index = (int)data;TaskInfo GetTask = null;while (true){TaskSemaphore.WaitOne();lock (myLock){GetTask = TaskQueue.Dequeue();}string AddStr = String.Format("Consumer {0} take Task {1}\r\n", Index, GetTask.Index);ShowTextEvent.Invoke(Index + 1, AddStr);Random r = new Random();Thread.Sleep(r.Next(5) * 1000);}}}
}