C#倒计时

示意图：六个lable,三个文本框，一个but即可  timer控件或自定义一个

以下是代码实现的部分

public int ConvertInt32(string name)
        {
            if (name != "" && name != null)
            {
                return Convert.ToInt32(name);
            }
            else
            {
                return 0;
            }
        }
        int Hose, Minut, Second = 0;
        //public void ComdTimer()
        //{
        //    if (button1.Text == "设置")//判断按钮的文本是否为设置
        //    {
        //        button1.Text = "停止";//设置按钮的文本为停止
        //        timer2.Start();//启动timer2计时器
        //    }
        //    else if (button1.Text == "停止")//判断按钮的文本是否为停止
        //    {
        //        button1.Text = "设置";//设置按钮的文本为设置
        //        timer2.Stop();//停止timer2计时器
        //        label3.Text = "倒计时已取消";
        //    }
        //}
        

        private void button1_Click(object sender, EventArgs e)
        {
            Hose = ConvertInt32(textBox1.Text.Trim());
            if (ConvertInt32(textBox2.Text.Trim()) > 60)
            {
                MessageBox.Show("不能大于60分钟");
                return;
            }
            else
            {
                Minut = ConvertInt32(textBox2.Text.Trim());
            }
            if (ConvertInt32(textBox3.Text.Trim()) >= 60)
            {
                MessageBox.Show("不能大于60秒");
                return;
            }
            else
            {
                Second = ConvertInt32(textBox3.Text.Trim());
            }
            this.timer1.Start();
            this.timer1.Enabled = true;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (Second != 0)
            {
                Second--;
                //给Viz发东西
            }
            if (Second == 0)
            {
                if (Minut != 0)
                {
                    Second += 60;
                    Minut--;
                }
            }
            if (Minut == 0)
            {
                if (Hose != 0)
                {
                    Minut += 60;
                    Hose--;
                }
            }
            label3.Text = Hose.ToString();
            label2.Text = Minut.ToString();
            label1.Text = Second.ToString();
        }