c# - 暂停和恢复线程事件

Question

我有一个线程在特定的时间间隔内将点添加到 zedgraph 组件上。我需要在按下复选框时暂停添加点，然后在再次按下复选框时恢复添加它们。以下是我的线程:

public class myThread{

     ManualResetEvent pauseResumeThread = new ManualResetEvent(true);

     public void threadHeartrateGraph()
            {                                                           
                    for (int k = 15; k < _hr.Length; k++)
                    {
                        pauseResumeThread.WaitOne();
                        if (HRDataSummary.threadPause == true)
                        {
                            break;
                        }
                        x = k;
                        y = _hr[k];
                        list1.Add(x, y);
                    _displayHRGraph.Invoke(list1, graph_HeartRate, _GraphName[0]);
                    graph_HeartRate.XAxis.Scale.Min = k-14;
                    graph_HeartRate.XAxis.Scale.Max = k+1;                        
                    Thread.Sleep(_interval * 1000);
                }  
            }
            catch (NullReferenceException)
            {

            }
        }
    public void play()
    {
        pauseResumeThread.Set();
    }
    public void pause()
    {
        pauseResumeThread.Reset();
    }
}

然后，我从复选框中调用了播放和暂停线程。

private void checkBoxPause_CheckedChanged(object sender, EventArgs e)
        {
            if(checkBoxPause.Checked == true)
            {
                //HRDataSummary.threadPause = true;
                checkBoxPause.Text = "Play >";
                myThread mythread = new myThread();
                Thread pause = new Thread(mythread.pause);
                pause.Start();
            }
            if (checkBoxPause.Checked == false)
            {
                //HRDataSummary.threadPause = false;
                checkBoxPause.Text = "Pause ||";
                myThread mythread = new myThread();
                Thread play = new Thread(mythread.play);
                play.Start();
            }
        }

我错过了什么？还是完全错误地使用了 ManualResetEvent？

Answer 1

首先你在全局声明你的 myThread 对象(只有一个!)。

myThread heartGraph = new myThread()

然后您想在一个新线程中启动您的 Worker-Method。

Thread worker = new Thread(heartGraph.threadHeartrateGraph);
worker.Start();

现在您可以使用 ManualResetEvent 来暂停/恢复工作。

if (checkBoxPause.Checked == true) {
    //HRDataSummary.threadPause = true;
    checkBoxPause.Text = "Play >";
    heartGraph.pause();
} else { 
    //HRDataSummary.threadPause = false;
    checkBoxPause.Text = "Pause ||";
    heartGraph.play();
}