private void timer1_Tick(object sender, EventArgs e)
{
label1.Text = (int.Parse(label1.Text) - 1).ToString();
if ((int.Parse(label1.Text) <= 0))
{
timer1.Stop();
button1.Text = "开始";
button2.Enabled = true;
MessageBox.Show("倒计时完毕!");
}
}
private void button1_Click(object sender, EventArgs e)
{
if (timer1.Enabled)
{
timer1.Stop();
button1.Text = "开始";
button2.Enabled = true;
}
else
{
timer1.Start();
button1.Text = "停止";
button2.Enabled = false;
}
}
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text="0";
}