Thread th = new Thread((ThreadStart)delegate()
            {
                test();
            });
            th.Start();
 public void test()
        {
            int i=0;
            while (i<100000)
            {
                this.Invoke
                    (
                    (MethodInvoker)delegate()
                    {
                        label1.Text = i.ToString();
                    }
                    );
                i += 100;
            }
        }

------解决方案--------------------
 public partial class Form1 : Form
   {
       public Form1()
       {
           InitializeComponent();
       }
       int number = 0;

       private void Form1_Load(object sender, EventArgs e)
       {
           timer1.Enabled = true;
       }

       private void timer1_Tick(object sender, EventArgs e)
       {
           button1.Text = "按钮" + number;  
           number++;
       }

       private void button2_Click(object sender, EventArgs e)
       {
           Thread th = new Thread(delegate()
           {
               NewMethod();
           });
           th.Start();
          
       }

       private static void NewMethod()
       {
           for (int i = 0; i < 10000; i++)
           {
               Console.WriteLine(i);
           }
       }

       private void button1_Click(object sender, EventArgs e)
       {
           timer1.Enabled = false;
       }


   }