如何使用线程自动更新标签

Question

我想从mod bus 协议中获取数据并使用标签以Windows 形式自动显示和更新。但是我遇到一个问题，我必须点击按钮来显示更新的数据而不是标签自动显示它。我的代码如下，有人可以指出我错在哪里以及如何纠正它。非常感谢:)

private void Call() {

    do
    {
        RequestData(); //get data from mod bus 
        run(a.ToString());
    } while (operation);
}

delegate void CallMethod(string Data);

private void run(string data) {

    if (this.labelO2.InvokeRequired)
    {
        SetRichBoxCallBack d = new SetRichBoxCallBack(run);
        this.Invoke(d, new object[] { data });
    }
    else {
        labelO2.Text = data;
    }
}
Thread thread;

private void button1_Click(object sender, EventArgs e)
{

    thread = new Thread(new ThreadStart(Call));
    thread.Start();
}

public void RequestData()
{
    if (WriteSerialPort(setMessage, 0, 8))
    {
        Thread.Sleep(1000);
        for (i = 0; i < 19; i++)
        {
            MM[i] = (byte)serialPortBoard.ReadByte();
        }

        a = MM[11] << 8 | MM[12];
        b = (int)MM[13] << 8 | MM[14];
    }
 }

Answer 1

用下面的代码替换你的代码：

private void run(string data) {

    //if (this.labelO2.InvokeRequired)
    //{
    //    SetRichBoxCallBack d = new SetRichBoxCallBack(run);
    //    this.Invoke(d, new object[] { data });
    //}
    //else {
    //    labelO2.Text = data;
    //}

    this.Invoke(new MethodInvoker(delegate {labelO2.Text = data;}));

}