C#中多线程控制进度条

Question

我有时在读取大量数据的时候，响应时间比较长，想做个进度条来显示运行进度,网上找了很多资料，但是都不能满足我的需要，基础有限，希望能有网友贴些代码出来。可以用backgroundwork或者progressbar

Answer 1

1、用Timer，什么就都不用你操心了
2、灵活控制的话，用线程：
Thread,ProgressBar.InvokeRequired,ProgressBar.Invoke(....);
就满足了

Answer 2

http://topic.csdn.net/u/20100119/10/101652e7-0a00-4fae-97fa-5d5915c60475.html
有我的一段代码，有兴趣的话可以去看看，大同小异

Answer 3

假进度。。？？public delegate void Do();
private bool _StopRequest;
private object _SycObj=new Object();
private void SetPro()
{
  if (Monitor.TryEnter(_SycObj, 500))
  {
     while(!_StopRequest)
    { 
        Thread.Sleep(1000);
      this.Invoke(new Do(IncProValue));
     }
  }
}private void IncProValue()
{
     if(ProgressBar1.value>=ProgressBar1.MaxValue@?)
     {
           ProgressBar1.MaxValue@?*=0.1;
     }
     ProgressBar1.value++;
}private void Start()
{
   _StopRequest=false;
   Thread t=new Thread(new ThreadStart(SetPro));
   t.IsBackGroud=true;
   t.Start(); 
}
private void Stop()
{
   _StopRequest=true;
}没试过看可以不。

Answer 4

progressBar1.最大值 ＝ 100；
progressBar1.value+=1;
就可以了啊。

Answer 5

        public delegate void Do();
        private bool _StopRequest;
        private object _SycObj = new Object();        private void SetPro()
        {
            if (Monitor.TryEnter(_SycObj, 500))
            {
                try
                {
                    while (!_StopRequest)
                    {
                        Thread.Sleep(100);
                        this.Invoke(new Do(IncProValue));
                    }
                }
                finally
                {
                    Monitor.Exit(_SycObj);
                }            }
        }        private void IncProValue()
        {
            if (progressBar1.Value >= progressBar1.Maximum)
            {
                progressBar1.Value = 0;
            }
            progressBar1.Value++;
        }        private void Start()
        {
            _StopRequest = false;
            Thread t = new Thread(new ThreadStart(SetPro));
            t.IsBackground = true;
            t.Start();
        }
        private void Stop()
        {
            _StopRequest = true;
        }        public Form1()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, EventArgs e)
        {
            Start();
        }        private void button2_Click(object sender, EventArgs e)
        {
            Stop();
        }

Answer 6

我最终想实现的效果是在读取Excel的数据到DataGridView的同时，用progressbar显示数据读取的进度，谁有代码的能贴下吗？这个问题困扰我一天的

Answer 7

做个假的最方便,把进度条做成EXE,主窗口完成任务再关掉.

Answer 8

learning
   jf快樂！

Answer 9

试试这个
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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Control.CheckForIllegalCrossThreadCalls = false;
            RegisterEvent();
        }        public delegate void MyEventHandler(object obj, int e);        public event MyEventHandler OnNumberAdd;        public void RegisterEvent()
        {
            OnNumberAdd += new MyEventHandler(Form1_OnNumberAdd);
        }        void Form1_OnNumberAdd(object obj, int e)
        {
            this.button1.Text = e.ToString();//button 换成ProgressBar
        }        Thread t = null;        public void CreateBatch()
        {
            t = new Thread(new ThreadStart(createbatch));
            t.Start();
        }        public void createbatch()
        {
            //这里可设置成读取的数量
            for (int i = 0; i < 100000; i++)
            {
                work(i, OnNumberAdd);
            }
        }
        private void work(int e, MyEventHandler temp)
        {
            if (OnNumberAdd != null)
            {
                foreach (MyEventHandler handler in temp.GetInvocationList())
                {
                    handler.BeginInvoke(this, e, null, null);
                }
            }
        }        private void button1_Click(object sender, EventArgs e)
        {
            CreateBatch();
        }
    }
}

Answer 10

行货就是委托，声明委托类型，然后在某个函数里面，invoke... 去看msdn吧，很容易理解的