C#中倒计时功能的优化方法小结

/// <summary>
/// 倒计时
/// </summary>
private void CurrentTime()
{
    Task.Run(() =>
    {
        while (true)
        {
            lbTime.Text = $"当前时间：{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}";

            Thread.Sleep(1000);
        }
    });
}

/// <summary>
/// 普通类静态方法
/// 对于静态方法，类可以是普通类，也可以是静态类
/// </summary>
public class TimeLabel
{
    public static void Time(Form that, int x=0, int y=0)
    {
        Label label = new Label();
        label.Location = new Point() { X = x, Y = y };
        label.Width = 179;
        label.Height = 15;

        that.Controls.Add(label);

        Task.Run(() => {
                
            while(true)
            {
                label.Text = $"当前时间：{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}";
                Thread.Sleep(1000);
            }
        });
    }
}

private void Test1_Load(object sender, EventArgs e)
{
    TimeLabel.Time(this, 50, 50);
}

private void button1_Click(object sender, EventArgs e)
{
    Test2 test2 = new Test2();
    test2.Show();
}

private void Test2_Load(object sender, EventArgs e)
{
    TimeLabel.Time(this, 50, 50);
}

/// <summary>
/// 构造函数
/// </summary>
public TestTemp()
{
    InitializeComponent();
    CheckForIllegalCrossThreadCalls = false;
}