Question

visual studio C#窗体应用程序 ，用按钮实现计时功能，再次点击按钮停止计时。

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Answer 1

int lefttime;
private void button1_Click(object sender, EventArgs e)
{
int minute;
try
{
minute = int.Parse(this.textBox1.Text);
}
catch (System.Exception ex)
{
this.label1.Text = "输入错误";
return;
}
lefttime = minute * 60;
this.timer1.Interval = 1000;
this.timer1.Enabled=true;
this.timer1.Start();
}

private void timer1_Tick(object sender, EventArgs e)
{
this.label1.Text = "剩余时间" + lefttime.ToString()+"秒";
lefttime--;
}

追问

不能用，你这个答案我百度过 ， 控件名都没改