- 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 Demo0004
- {
- public partial class Form1 : Form
- {
- public Form1()
- {
- InitializeComponent();
- }
- //线程开始的时候调用的委托
- private delegate void maxValueDelegate(int maxValue);
- //线程执行中调用的委托
- private delegate void nowValueDelegate(int nowValue);
- private void button1_Click(object sender, EventArgs e)
- {
- ThreadMethod method = new ThreadMethod();
- //先订阅一下事件
- method.threadStartEvent += new EventHandler(method_threadStartEvent);
- method.threadEvent += new EventHandler(method_threadEvent);
- method.threadEndEvent += new EventHandler(method_threadEndEvent);
- Thread thread = new Thread(new ThreadStart(method.runMethod));
- thread.Start();
- }
- /// <summary>
- /// 线程开始事件,设置进度条最大值
- /// 但是我不能直接操作进度条,需要一个委托来替我完成
- /// </summary>
- /// <param name="sender">ThreadMethod函数中传过来的最大值</param>
- /// <param name="e"></param>
- void method_threadStartEvent(object sender, EventArgs e)
- {
- int maxValue = Convert.ToInt32(sender);
- maxValueDelegate max = new maxValueDelegate(setMax);
- this.Invoke(max, maxValue);
- }
- /// <summary>
- /// 线程执行中的事件,设置进度条当前进度
- /// 但是我不能直接操作进度条,需要一个委托来替我完成
- /// </summary>
- /// <param name="sender">ThreadMethod函数中传过来的当前值</param>
- /// <param name="e"></param>
- void method_threadEvent(object sender, EventArgs e)
- {
- int nowValue = Convert.ToInt32(sender);
- nowValueDelegate now = new nowValueDelegate(setNow);
- this.Invoke(now, nowValue);
- }
- /// <summary>
- /// 线程完成事件
- /// </summary>
- /// <param name="sender"></param>
- /// <param name="e"></param>
- void method_threadEndEvent(object sender, EventArgs e)
- {
- MessageBox.Show("执行已经完成!");
- }
- /// <summary>
- /// 我被委托调用,专门设置进度条最大值的
- /// </summary>
- /// <param name="maxValue"></param>
- private void setMax(int maxValue)
- {
- this.progressBar1.Maximum = maxValue;
- }
- /// <summary>
- /// 我被委托调用,专门设置进度条当前值的
- /// </summary>
- /// <param name="nowValue"></param>
- private void setNow(int nowValue)
- {
- this.progressBar1.Value = nowValue;
- }
- }
- public class ThreadMethod
- {
- /// <summary>
- /// 线程开始事件
- /// </summary>
- public event EventHandler threadStartEvent;
- /// <summary>
- /// 线程执行时事件
- /// </summary>
- public event EventHandler threadEvent;
- /// <summary>
- /// 线程结束事件
- /// </summary>
- public event EventHandler threadEndEvent;
- public void runMethod()
- {
- int count = 100; //执行多少次
- threadStartEvent.Invoke(count, new EventArgs());//通知主界面,我开始了,count用来设置进度条的最大值
- for (int i = 0; i < count; i++)
- {
- Thread.Sleep(100);//休息100毫秒,模拟执行大数据量操作
- threadEvent.Invoke(i, new EventArgs());//通知主界面我正在执行,i表示进度条当前进度
- }
- threadEndEvent.Invoke(new object(), new EventArgs());//通知主界面我已经完成了
- }
- }
- }
- 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 Demo0004
- {
- public partial class Form2 : Form
- {
- //在下载窗体上面 建一个委托
- public delegate void ChangeProgress(int value); //进度条
- public delegate void ChangeButton(int value); //按钮
- //创建上面的委托的变量
- public ChangeProgress changeProgerss;
- public ChangeButton changebtn;
- public Form2()
- {
- InitializeComponent();
- //为这个委托变量赋值
- changeProgerss = FunChangeProgress;
- changebtn = FunChangebutton;
- }
- //通过创建工作线程消除用户界面线程的阻塞问题
- private void button1_Click(object sender, EventArgs e)
- {
- button1.Enabled = false;
- //新创建一个线程
- System.Threading.Thread thr = new System.Threading.Thread(new System.Threading.ParameterizedThreadStart(Download));
- thr.Start();
- }
- //线程方法 一定要是object 类型参数 同时返回值是void
- private void Download(object obj)
- {
- for (int i = 0; i <= 100; i++)
- {
- //执行委托 更新按钮 -重点
- this.button1.Invoke(changebtn, i);
- //执行委托 更新进度条 -重点
- this.progressBar1.Invoke(changeProgerss, i);
- System.Threading.Thread.Sleep(100);
- }
- }
- //更新进度条
- public void FunChangeProgress(int value)
- {
- progressBar1.Value = value;
- }
- //更新按钮
- public void FunChangebutton(int value)
- {
- if (value == 100)
- {
- button1.Text = "开始新进程";
- button1.Enabled = true;
- }
- else
- {
- //相除保留两位小数 且四舍五入 Math.Round(1.00 * value / 100, 2,MidpointRounding.AwayFromZero)
- button1.Text = Math.Round(1.00 * value / 100, 2,MidpointRounding.AwayFromZero) * 100 + "%";
- }
- }
- //窗体关闭 强制退出 销毁所有相关进程
- private void Form2_FormClosing(object sender, FormClosingEventArgs e)
- {
- //强制退出 销毁进程
- System.Environment.Exit(System.Environment.ExitCode);
- this.Dispose();
- this.Close();
- }
- }
- }
- 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;
- namespace Demo0004
- {
- public partial class Form3 : Form
- {
- public delegate void ChangeStatus();
- //创建上面的委托的变量
- public ChangeStatus changestatus;
- public Form3()
- {
- InitializeComponent();
- }
- private void Form3_Load(object sender, EventArgs e)
- {
- //使用Timer组件实现多线程定时同步
- System.Timers.Timer t = new System.Timers.Timer(3000); //实例化Timer类,设置间隔时间单位毫秒;
- t.Elapsed += new System.Timers.ElapsedEventHandler(UpdateWork); //到达时间的时候执行事件;
- t.AutoReset = true; //设置是执行一次(false)还是一直执行(true);
- t.Enabled = true; //是否执行System.Timers.Timer.Elapsed事件;
- changestatus = FunChangeStatus;
- }
- private void UpdateWork(object source, System.Timers.ElapsedEventArgs e)
- {
- this.Invoke(changestatus);
- }
- //更新
- public void FunChangeStatus()
- {
- #region 更新开始
- //更新方法
- #endregion
- lbtimer.Text = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " 数据更新成功";
- }
- }
- }
本文转自莫水千流博客园博客,原文链接:http://www.cnblogs.com/zhoug2020/p/5845973.html,如需转载请自行联系原作者