using System.ComponentModel;
using System.Threading;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, System.EventArgs e)
    {
        // Start the BackgroundWorker.
        backgroundWorker1.RunWorkerAsync();
    }

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        for (int i = 1; i <= 100; i++)
        {
        // Wait 100 milliseconds.
        Thread.Sleep(100);
        // Report progress.
        backgroundWorker1.ReportProgress(i);
        }
    }

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        // Change the value of the ProgressBar to the BackgroundWorker progress.
        progressBar1.Value = e.ProgressPercentage;
        // Set the text.
        this.Text = e.ProgressPercentage.ToString();
    }
    }
}

更多详情访问下面的网页...

http://www.dotnetperls.com/progressbar [ ^ ]

这就是我在dotnet上做的事情3.5

This is what i do on dotnet 3.5

using System.ComponentModel;
using System.Threading;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
    public Form1()
    {
        InitializeComponent();
    }

private delegate void progressDelegate(string progress);

    private void Form1_Load(object sender, System.EventArgs e)
    {
        // Start the BackgroundWorker.
        ProgressBar1.Visible = true;
        backgroundWorker1.RunWorkerAsync();
    }

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
       for (int i = 0; i <= 50000; i++)
               {
            progressDelegate m_UpdateText = null;
            m_UpdateText = new progressDelegate(progress1);
            this.Invoke(m_UpdateText, i.ToString());
        }
    }


    private void progress1(string progress)
    {
        this.Text = progress;
        ProgressBar1.Minimum = 0;
        ProgressBar1.Maximum = 50000;
        ProgressBar1.Value = Convert.ToInt32(progress);
    }

    private void BackgroundWorker1_RunWorkerCompleted(object sender,   System.ComponentModel.RunWorkerCompletedEventArgs e)
    {
        Interaction.MsgBox("Done proccessing");
                this.Text = "Done";
        ProgressBar1.Visible = false;
    }

}

private void btn_Submit_Click（object sender，EventArgs e）

{

Progressbar1.Visible = True;

//这里你的代码

}

private void btn_Submit_Click(object sender, EventArgs e)
{
Progressbar1.Visible=True;
//here ur code
}