public Form1()
        {
            InitializeComponent();
             
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            Thread t = new Thread(new ThreadStart(() =>
            {
                //dataGridView1.Rows[0].Cells[0].Value = "1"; //不会出错    
                label1.Text = "2";//出错 线程间操作无效: 从不是创建控件“label1”的线程访问它。
            }));
            t.Start();
        }