namespace _19多线程
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e) { //创建一个线程去执行这个方法 Thread th = new Thread(Test); //将线程设置为后台线程 th.IsBackground = true; //标记线程已准备就绪，随时可以开启 th.Start(); } public void Test() { for (int i = 0; i < 10000; i++) { textBox1.Text = i.ToString(); } } private void Form1_Load(object sender, EventArgs e) { //程序运行时取消跨线程的访问检查 Control.CheckForIllegalCrossThreadCalls = false; }}

}