c# progressBar使用

zhaojunv3z810 2010-02-10 10:56:50

我要上传一个大文件，由于时间很长，不知道什么时候结束。C#中怎么样使用progressBar能够知道现在上传文件的进度呢？

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切换为时间正序

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cxy649359628 2011-12-31

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找了发久的说

zhq5223984 2011-12-03

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好帖，一定要学习！！！

liuxp1987 2011-10-03

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正在找这样的例子

yu8440348 2011-08-25

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为什么用了12楼的代码，进度条不动呢

Jave.Lin 2010-02-23

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Good 贴,学习。.........

zhaojunv3z810 2010-02-11

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谢谢大家给我提供了这么多宝贵的建议

zhaojunv3z810 2010-02-10

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引用 2 楼 wxm3630478 的回复:

C# code//一个模拟.....也可能不适合你,不知道你的发送文件代码是怎么写的privatevoid button3_Click(object sender, EventArgs e)
{
Thread thread=new Thread(new ThreadStart(Send));
thread.Start();
}privatevoid Send()
{int i=0;while (i<=100)
{//显示进度信息this.ShowPro(i);//循环发生文件//模拟的 i++;//模拟发送多少 Thread.Sleep(100);
}
Thread.CurrentThread.Abort();
}privatevoid ShowPro(int value)
{if (this.InvokeRequired)
{this.Invoke(new ProgressBarShow(ShowPro), value);
}else
{this.progressBar1.Value= value;this.label1.Text= value+"%";
}
}

wxm3630478：谢谢你的好代码
另：听说可以用onPaint()函数，有这方面的sample吗

wxm3630478 2010-02-10

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//一个模拟.....也可能不适合你,不知道你的发送文件代码是怎么写的

    private void button3_Click(object sender, EventArgs e)

    {

        Thread thread = new Thread(new ThreadStart(Send));

        thread.Start();

    }



    private void Send()

    {

      int i = 0;

      while (i <= 100)

      {

         //显示进度 信息

        this.ShowPro(i);

        //循环发生文件

         //模拟的 

        i++; //模拟发送多少

        Thread.Sleep(100);

      }

      Thread.CurrentThread.Abort();

    }



    private void ShowPro(int value)

    {

      if (this.InvokeRequired)

      {

        this.Invoke(new ProgressBarShow(ShowPro), value);

      }

      else

      {

        this.progressBar1.Value = value;

        this.label1.Text = value + "%";

      }

    }

huwei12345 2010-02-10

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造个假的。。。。

大多数都是假的

whb147 2010-02-10

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前几天刚用过,修改了一下,参考了一位前辈的例子
http://blog.mylover.cn/2009/02/post-3.html





using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Threading;



namespace TestProgressBar

{

    public partial class TestForm : Form

    {

        //线程开始的时候调用的委托

        private delegate void maxValueDelegate(WordEventArgs e);

        //线程执行中调用的委托

        private delegate void nowValueDelegate(WordEventArgs e);

        //线程执行结束调用的委托

        private delegate void endValueDelegate(WordEventArgs e);



        public TestForm()

        {

            InitializeComponent();

        }



        private void btn_Test_Click(object sender, EventArgs e)

        {

            Worker worker = new Worker();



            /// 订阅事件

            worker.OnStartWorkEvent += new WorkEventHandler(this.OnStartWorkEventHandler);

            worker.OnDoWorkEvent += new WorkEventHandler(this.OnDoWorkEventHandler);

            worker.OnEndWorkEvent += new WorkEventHandler(this.OnEndWorkEventHandler);



            Thread thread = new Thread(new ThreadStart(worker.Work));

            thread.Start();  

        }



        /// <summary>

        /// 线程开始事件,设置进度条最大值,需要一个委托来替我完成

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        void OnStartWorkEventHandler(object sender, WordEventArgs e)

        {            

            maxValueDelegate max = new maxValueDelegate(SetMaxValue);

            this.Invoke(max, e);

        }



        /// <summary>

        /// 线程执行中的事件,设置进度条当前进度,需要一个委托来替我完成

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        void OnDoWorkEventHandler(object sender, WordEventArgs e)

        {           

            nowValueDelegate now = new nowValueDelegate(SetNowValue);

            this.Invoke(now, e);

        }



        /// <summary>

        /// 线程完成事件

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        void OnEndWorkEventHandler(object sender, WordEventArgs e)

        {

            endValueDelegate end = new endValueDelegate(SetEndValue);

            this.Invoke(end, e);

        }



        /// <summary>

        /// 被委托调用,专门设置进度条最大值的

        /// </summary>

        /// <param name="maxValue"></param>

        private void SetMaxValue(WordEventArgs e)

        {

            this.probar_Test.Maximum = e.Position;

            lbl_Info.Text = e.Info;

        }



        /// <summary>

        /// 被委托调用,专门设置进度条当前值的

        /// </summary>

        /// <param name="nowValue"></param>

        private void SetNowValue(WordEventArgs e)

        {

            this.probar_Test.Value = e.Position;

            lbl_Info.Text = e.Info;

        }



        /// <summary>

        /// 被委托调用,专门设置进度条结束后的处理

        /// </summary>

        /// <param name="nowValue"></param>

        private void SetEndValue(WordEventArgs e)

        {

            this.probar_Test.Value = e.Position; ;

            lbl_Info.Text = e.Info;

            MessageBox.Show(e.Info);           



        }



    }

}



using System;

using System.Collections.Generic;

using System.Text;

using System.Threading;



namespace TestProgressBar

{

    public delegate void WorkEventHandler(object sender, WordEventArgs e);



    class Worker

    {

        /// <summary>

        /// 开始事件

        /// </summary>

        public event WorkEventHandler OnStartWorkEvent;

        /// <summary>

        /// 执行时事件

        /// </summary>

        public event WorkEventHandler OnDoWorkEvent;

        /// <summary>

        /// 结束事件

        /// </summary>

        public event WorkEventHandler OnEndWorkEvent;

        public Worker() 

        {  }



        private void SendEvents(WordEventArgs e)

        {

            switch (e.Stage)

            {

                case WorkStage.BeginWork:

                    if (OnStartWorkEvent != null) OnStartWorkEvent(this, e);

                    break;

                case WorkStage.DoWork:

                    if (OnDoWorkEvent != null) OnDoWorkEvent(this, e);

                    break;

                case WorkStage.EndWork:

                    if (OnEndWorkEvent != null) OnEndWorkEvent(this, e);

                    break;

                default:

                    if (OnDoWorkEvent != null) OnDoWorkEvent(this, e);

                    break;



            }



        }



        public void Work()

        {

            int iTotal = 100;//计算工作量，这里是设置为100，如果是上传，或者下载，就是文件的大小，循环遍历的话，这就是最大的那个循环数

            SendEvents(new WordEventArgs(WorkStage.BeginWork, "开始工作！", iTotal));

            int iCount = 0;

            for (int i = 0; i < iTotal; i++)

            {

                Thread.Sleep(50);//休息50毫秒,模拟执行大数据量操作,

                iCount = i; // 此处计算所处的位置，如果是上传或者下载了多少了，

                SendEvents(new WordEventArgs(WorkStage.DoWork, "正在工作ing " + iCount.ToString(), iCount));

            }



            SendEvents(new WordEventArgs(WorkStage.EndWork, "结束工作！", iTotal));

        }



    }



    class WordEventArgs : EventArgs

    {

        //主要是用来往外传递信息的

        public WorkStage Stage;

        public string Info = "";

        public int Position = 0;      

        public WordEventArgs(WorkStage Stage, string Info, int Position)

        {

            this.Stage = Stage;

            this.Info = Info;

            this.Position = Position;

        }

    }



    public enum WorkStage

    {

       BeginWork,  //准备工作

        DoWork,     //正在工作  

        EndWork,    //工作结束

    }

}