backgroundWorker使用问题

Question

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Threading;
using System.Reflection;namespace 循环显示
{
    public partial class Form1 : Form
    {
        //private static int MaxRecords = 100;        public Form1()
        {
            InitializeComponent();
        }        private void Form1_Load(object sender, EventArgs e)
        {        }        private void GetResult()
        {
            for (int i = 0; i < 10000; i++)
            {
               
                backgroundWorker1.ReportProgress(i);
            }
        }         
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {            GetResult();    
        }        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this.label1.Text = e.ProgressPercentage.ToString();
            //this.listBox1.Items.Add(e.ProgressPercentage.ToString());
        }        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            try
            {
                
                this.button1.Enabled = true;
                this.button2.Enabled = false;
            }
            catch (TargetInvocationException ex)
            {
                MessageBox.Show(ex.InnerException.GetType().ToString());
            }
        }        private void button1_Click(object sender, EventArgs e)
        {
            
            //this.listBox1.Items.Clear();
            this.backgroundWorker1.RunWorkerAsync();
            this.button1.Enabled = false;
            this.button2.Enabled = true;
        }        private void button2_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.CancelAsync();
        }
    }
}
不知道哪里错了 我这个代码 没有报错 但是就是没有执行结果

Answer 1

private void GetResult()
        {
            for (int i = 0; i < 10000; i++)
            {
               
                backgroundWorker1.ReportProgress(i+1);
            }
        } 

Answer 2

 private void button1_Click(object sender, EventArgs e)
{
            
     //this.listBox1.Items.Clear();
      this.backgroundWorker1.RunWorkerAsync();//你开始执行操作时没值的?
      this.button1.Enabled = false;
      this.button2.Enabled = true;
}

Answer 3

backgroundWorker1.WorkerReportsProgress = true;
backgroundWorker1.RunWorkerAsync();

Answer 4

this.backgroundWorker1.WorkerReportsProgress = true;
            this.backgroundWorker1.WorkerSupportsCancellation = true;

Answer 5

this.backgroundWorker1.WorkerReportsProgress = true;
            this.backgroundWorker1.WorkerSupportsCancellation = true;

Answer 6

有反映
 private void GetResult()
        {
            for (int i = 0; i < 10000; i++)
            {                backgroundWorker1.ReportProgress(i);
                System.Threading.Thread.Sleep(1);//这样就能看到，如果不加就只能看到1和最后的9999，我这里运行是这样的
            }
        } 

Answer 7

恩,运行速度太快了啦,7楼的可以, System.Threading.Thread.Sleep(1000);//一秒改变一次

Answer 8

this.backgroundWorker1.DoWork += new System.ComponentModel.DoWorkEventHandler(this.backgroundWorker1_DoWork);
            this.backgroundWorker1.RunWorkerCompleted += new System.ComponentModel.RunWorkerCompletedEventHandler(this.backgroundWorker1_RunWorkerCompleted);
            this.backgroundWorker1.ProgressChanged += new System.ComponentModel.ProgressChangedEventHandler(this.backgroundWorker1_ProgressChanged);
            // 
找到原因了 事件没有绑定 哈哈