新表达式需要在键入后使用 ()、[] 或 {}

所以我正在尝试制作一个基本的秒表程序，但我不断收到此错误"新表达式在键入后需要 （）、[] 或 {}"这是我的代码：

namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        int ms, s, m, h;
        Timer timer1 = new Timer
        public Form1() 
        {
            InitializeComponent();
            ms = 0;
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            ms = ms + 1;
            if (ms == 9)
            {
                ms = 0;
                s = s + 1;
                lblsecond.Text = s.ToString();
                if (s == 59)
                {
                    s = 0;
                    m = m + 1;
                    lblmin.Text = m.ToString();
                    if (m == 59)
                    {
                        m = 0;
                        h = h + 1;
                        lblhur.Text = h.ToString();
                        {
                            lblmsec.Text = ms.ToString();
                        }
                    }
                }
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }
        private void label1_Click(object sender, EventArgs e)
        {
        }
        private void label1_Click_1(object sender, EventArgs e)
        {
        }
        private void label2_Click(object sender, EventArgs e)
        {
        }
        private void button1_Click(object sender, EventArgs e)
        {
            timer1.Enabled = true;
        }
        private void button2_Click(object sender, EventArgs e)
        {
            timer1.Enabled = true;
        }
        private void button3_Click(object sender, EventArgs e)
        {
            ms = 0;
            h = 0;
            s = 0;
            m = 0;
            timer1.Enabled = false;
            lblhur.Text = "00";
            lblmin.Text = "00";
            lblmsec.Text = "00";
            lblsecond.Text = "00";
        }
    }
}