如何测量 C# 中点击之间的时间？

Question

您好，我想编写一个代码来执行此操作。我一直点击，如果点击之间的时间 >= 2000 毫秒，然后在标签中写一些东西，否则继续点击。

Stopwatch sw = new Stopwatch();
    double tt = 2000;
    double duration = sw.ElapsedMilliseconds;

    private void button1_Click(object sender, EventArgs e)
    {

        sw.Start();
        if (duration >= tt)
        {
            label1.Text = "Speed reached!";
        }
        else
        {
            sw.Stop();
            duration = 0;
        }
    }

Answer 1

sw.ElapsedMilliseconds是值类型，不是引用类型如果您将它分配给一个变量并且 ElapsedMilliseconds 发生变化你的变量不会改变

此外，将开始放在代码的末尾这应该有效

Stopwatch sw = new Stopwatch();
    double tt = 2000;

    private void button1_Click(object sender, EventArgs e)
    {
        if (sw.ElapsedMilliseconds >= tt)
        {
            label1.Text = "Speed reached!";
        }
        else
        {
            sw.Stop();
            sw.Reset();
        }
        sw.Start();
    }

Answer 2

private void button1_Click(object sender, EventArgs e)
{
    Session["PrevClickTime"] = Session["PrevClickTime"] ?? DateTime.Now.AddDays(-1);
    if (((DateTime)Session["PrevClickTime"]).Subtract(DateTime.Now).Milliseconds >= 2000)
    {
        label1.Text = "Speed reached!";
    }
    else
    {
        // do y
    }
    Session["PrevClickTime"] = DateTime.Now
}

Answer 3

修改你的代码如下：

    private void button1_Click(object sender, EventArgs e)
    {
        sw.Stop();

        if (sw.Elapsed.Milliseconds >= tt)
        {
            label1.Text = "Speed reached!";
        }
        else
        {
            sw.Reset();
            sw.Start();
        }
    }

Answer 4

如果我正确理解你的问题，你想要这样的东西：

Stopwatch sw = new Stopwatch();
double tt = 2000;

private void button1_Click(object sender, EventArgs e)
{
    sw.Stop();
    if (sw.ElapsedMilliseconds >= tt)
    {
        label1.Text = "Speed reached!";
    }
    sw.Reset();
    sw.Start();
}

这将在第一次点击时启动秒表，然后在每次点击时测量两次点击之间的时间。

Answer 5

我会建议另一种方法，您可以 删除每次点击时的点击事件处理程序 并 启动一个 2 秒的计时器 等等计时器的滴答声，再次附加点击事件处理程序。这是示例代码：

System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer() { Interval = 2000  }; // here time in milliseconds
private void button1_Click(object sender, EventArgs e)  // event handler of your button
{
    button1.Click -= button1_Click; // remove the event handler for now

    label1.Text = "Speed reached!";

    // remove already attached tick handler if any, otherwise the handler would be called multiple times
    timer.Tick -= timer_Tick;
    timer.Tick += timer_Tick;
    timer.Start();
}

void timer_Tick(object sender, System.EventArgs e)
{
    button1.Click += button1_Click; // attach the event handler again
    timer.Stop();
}

如何测量 C# 中点击之间的时间？

How to measure time between clicks in C#?

c#

forms

stopwatch

button