using System.Threading;
private void button1_Click(object sender, EventArgs e)
        {
            Thread myThread = new Thread(() =>
           {
               int count =0;
               for(int i=0;i < 100;i++)
               {
                   count++;
                   Console.WriteLine(count);
                   System.Threading.Thread.Sleep(1000);
               }
           });

            myThread.IsBackground = true;
            myThread.Start();
        }

线程中给控件赋值,如下:

private void button2_Click(object sender, EventArgs e)
        {
            int count = 0;
            Thread myThread = new Thread(delegate ()
            {
                for (int i = 0; i < 100; i++)
                {
                    count++;
                    Console.WriteLine(count);
                    System.Threading.Thread.Sleep(30);

                    label1.Invoke(new Action(s =>
                    {
                        label1.Text = s;
                    }), count.ToString());
                }
            });
            myThread.IsBackground = true;
            myThread.Start();
        }