ProgressBar控件

private void Form1_Load(object sender, EventArgs e)
{
    progressBar1.Location = new System.Drawing.Point(100, 100);
    progressBar1.Size = new System.Drawing.Size(300, 20);
    progressBar1.Maximum = 200;
    progressBar1.Minimum = 1;
}

private void button1_Click(object sender, EventArgs e)
{
    Thread thread = new Thread(new ThreadStart((delegate
    {
        for (int i = 1; i <= 200; i++) //ProcessBar控件最大值是多少，这里i就要小于等于多少，如果小于它，滚动条将到不了尽头
        {
            progressBar1.Value = i; //将进度条的值定义为i的值，每次循环过来加1
            Thread.Sleep(200); //休息200毫秒在往下执行
        }
    })));
    thread.Start();
}

添加以下代码，忽略控件多线程的安全机制：

Control.CheckForIllegalCrossThreadCalls = false;