如何使用带有计时器滴答的BackgroundWorker？

Question

决定不使用任何计时器.我做的更简单.

添加了一个后台工作者.在加载了所有构造函数后,在已显示的事件中添加了一个Shown事件.在Shown事件中我启动了backgroundworker async.

在后台工作者DoWork我做:

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            while(true)
            {
                cpuView();
                gpuView();
                Thread.Sleep(1000);
            }
        }

Answer 1

在这种情况下,最好使用两个System.Threading.Timer并在这两个线程中执行cpu密集型操作.请注意,您必须访问控件BeginInvoke.您可以将这些访问封装到属性setter中,甚至可以将它们更好地提取到视图模型类中.

public class MyForm : Form
{
    private System.Threading.Timer gpuUpdateTimer;
    private System.Threading.Timer cpuUpdateTimer;

    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);

        if (!DesignMode)
        {
            gpuUpdateTimer = new System.Threading.Timer(UpdateGpuView, null, 0, 1000);
            cpuUpdateTimer = new System.Threading.Timer(UpdateCpuView, null, 0, 100);
        }
    }

    private string GpuText
    {
        set
        {
            if (InvokeRequired)
            {
                BeginInvoke(new Action(() => gpuLabel.Text = value), null);
            }
        }
    }

    private string TemperatureLabel
    {
        set
        {
            if (InvokeRequired)
            {
                BeginInvoke(new Action(() => temperatureLabel.Text = value), null);
            }
        }
    }

    private void UpdateCpuView(object state)
    {
        // do your stuff here
        // 
        // do not access control directly, use BeginInvoke!
        TemperatureLabel = sensor.Value.ToString() + "c" // whatever
    }

    private void UpdateGpuView(object state)
    {
        // do your stuff here
        // 
        // do not access control directly, use BeginInvoke!
        GpuText = sensor.Value.ToString() + "c";  // whatever
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            if (cpuTimer != null)
            {
                cpuTimer.Dispose();
            }
            if (gpuTimer != null)
            {
                gpuTimer.Dispose();
            }
        }

        base.Dispose(disposing);
    }