如何在C＃中显示计时器的刻度

Question

I want to know how can I achieve this goal?

    private void btnProcess_Click(object sender, EventArgs e)
{
    timer1.Start();
    //100 plus line of code here
    timer1.Stop();
}

int i = 0;

private void timer1_Tick(object sender, EventArgs e)
{
    i++;
    label1.text = i.toString();
}

I want to happen is that when I press the button the timer will run and display the time in label1.text and it will stop until it will reach the timer stop function

Answer 1

var sw = Stopwatch.StartNew();
//100 lines of code... 
label1.Text = sw.Elapsed.ToString();

???