Lambda表达式的使用

delegate void Shows(string str, Label lbl);
        private void button1_Click(object sender, EventArgs e)
        {
            Thread thread = new Thread(()=> {
                for (int i = 0; i < 1000; i++)
                {
                    lblGo(i + "/1000", label1);
                    Thread.Sleep(100);
                }
                
            });
            thread.Start();
        }
        private void lblGo(string  j, Label lbl)
        {
            if (lbl.InvokeRequired)
            {
                Shows s = new Shows(lblGo);
                this.Invoke(s, new object[] { j, lbl });
            }
            else
            {
                lbl.Text = j;
            }
        }