how to calculate button press time in c#?

Question

我的表单中有各种按钮，每按一次按钮都会有一个动作与之相关。我想测量按钮被按下和释放之间的时间（以毫秒为单位），如何为每个按钮做到这一点。

Answer 1

In the Form_Load event you can iterate all buttons and dynamically attach Stopwatch to each of them, then handle their MouseDown and MouseUp events:

this.Controls.OfType<Button>().ToList().ForEach(button =>
{
    button.Tag = new Stopwatch();
    button.MouseDown += new MouseEventHandler(button_MouseDown);
    button.MouseUp += new MouseEventHandler(button_MouseUp);
});

And the functions:

void button_MouseUp(object sender, MouseEventArgs e)
{
    Stopwatch watch = ((sender as Button).Tag as Stopwatch);
    watch.Stop();
    MessageBox.Show("This button was clicked for " + watch.Elapsed.TotalMilliseconds + " milliseconds");
    watch.Reset();
}

void button_MouseDown(object sender, MouseEventArgs e)
{
    ((sender as Button).Tag as Stopwatch).Start();
}

Answer 2

Can measure the time span using StopWatch , or use a performance profiler , like
Equatec , which has a free option too.

StopWatch relative StartNew and Stop mthods can inject, in front and at the end of the event handler.

Answer 3

You need to capture the KeyDown and MouseDown for the down event and the KeyUp and MouseUp for the up event.

    public Form1()
    {
        InitializeComponent();
        button1.KeyDown += new KeyEventHandler(button1_down);
        button1.MouseDown+=new MouseEventHandler(button1_down);

        button1.KeyUp += new KeyEventHandler(button1_Up);
        button1.MouseUp += new MouseEventHandler(button1_Up);
    }

    void button1_down(object sender, EventArgs e)
    {
        Console.WriteLine(DateTime.Now.Ticks / TimeSpan.TicksPerMillisecond);
    }

    private void button1_Up(object sender, EventArgs e)
    {
        Console.WriteLine(DateTime.Now.Ticks / TimeSpan.TicksPerMillisecond);
    }