控制台程序代码：
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
bool flag = false;
Thread t;
private void button1_Click(object sender, EventArgs e)
{
if (flag==false)
{
flag = true;
button1.Text = "停止";
t = new Thread(jj);
t.IsBackground = true;
t.Start();
} else
{
flag = false;
button1.Text = "开始";
}
}
public void jj()
{
Random r = new Random();
while (flag)
{
label1.Text = r.Next(0, 10).ToString();
label2.Text = r.Next(0, 10).ToString();
label3.Text = r.Next(0, 10).ToString();
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (t != null)
{
t.Abort();
}
}
private void Form1_Load(object sender, EventArgs e)
{
Control.CheckForIllegalCrossThreadCalls = false;
}
}
截图：
