这里如何使用线程和一个progressBar，这只是为了理解线程是如何工作的，在表单中有三个progressBar和4个按钮:

 public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    Thread t, t2, t3;
    private void Form1_Load(object sender, EventArgs e)
    {

        CheckForIllegalCrossThreadCalls = false;

         t = new Thread(birinicBar); //evry thread workes with a new progressBar


         t2 = new Thread(ikinciBar);


         t3 = new Thread(ucuncuBar);

    }

    public void birinicBar() //to make progressBar work
    {
        for (int i = 0; i < 100; i++) {
            progressBar1.Value++;
            Thread.Sleep(100); // this progressBar gonna work faster
        }
    }

    public void ikinciBar()
    {
        for (int i = 0; i < 100; i++)
        {
            progressBar2.Value++;
            Thread.Sleep(200);
        }


    }

    public void ucuncuBar()
    {
        for (int i = 0; i < 100; i++)
        {
            progressBar3.Value++;
            Thread.Sleep(300);
        }
    }

    private void button1_Click(object sender, EventArgs e) //that button to start the threads
    {
        t.Start();
        t2.Start(); t3.Start();

    }

    private void button4_Click(object sender, EventArgs e)//that button to stup the threads with the progressBar
    {
        t.Suspend();
        t2.Suspend();
        t3.Suspend();
    }

    private void button2_Click(object sender, EventArgs e)// that is for contuniue after stuping
    {
        t.Resume();
        t2.Resume();
        t3.Resume();
    }

    private void button3_Click(object sender, EventArgs e) // finally with that button you can remove all of the threads
    {
        t.Abort();
        t2.Abort();
        t3.Abort();
    }
}

尝试使用BackgroundWorker类。您为它指定要运行的内容，并在工作完成时通知它。在我链接到的MSDN页面上有一个例子。

又快又脏，但很管用:

用于顶部:

using System.Threading;

简单的代码:

static void Main( string[] args )
{
    Thread t = new Thread( NewThread );
    t.Start();
}

static void NewThread()
{
    //code goes here
}

我只是将其放入一个新的控制台应用程序中作为示例

另一种选择，使用委托和线程池…

假设'GetEnergyUsage'是一个方法，它接受一个DateTime和另一个DateTime作为输入参数，并返回一个Int…

// following declaration of delegate ,,,
public delegate long GetEnergyUsageDelegate(DateTime lastRunTime, 
                                            DateTime procDateTime);

// following inside of some client method 
GetEnergyUsageDelegate nrgDel = GetEnergyUsage;                     
IAsyncResult aR = nrgDel.BeginInvoke(lastRunTime, procDT, null, null);
while (!aR.IsCompleted) Thread.Sleep(500);
int usageCnt = nrgDel.EndInvoke(aR);

我建议参考Jeff Richter的Power Threading Library，特别是IAsyncEnumerator。看看查理·卡尔弗特博客上的视频，里希特对它有一个很好的概述。

不要被这个名字吓倒，因为它使异步编程任务更容易编码。

如果你想得到一个值:

var someValue;

Thread thread = new Thread(delegate()
            {                 
                //Do somthing and set your value
                someValue = "Hello World";
            });

thread.Start();

while (thread.IsAlive)
  Application.DoEvents();